Ph. D., The University of Tokyo

Master of Engineering, The University of Tokyo

Bachelor of Engineering, The University of Electro-Communications

Optical Science and Engineering (Optical Metrology, Optical Information Processing, Holography, Statistical Optics)

Other, Other, Optical Science and Engineering

Apr. 2021 - Present
Utsunomiya University, Center for Optical Research and Education, Emeritus Fellow, Japan

Apr. 2012 - Present
The University of Electro-Communication, Emeritus Professor

Apr. 2012 - Mar. 2021
Utsunomiya University, Center for Optical Research and Education, Research Professor

Mar. 2013 - Aug. 2014
Stuttgart University, Institute for Applied Optics, Humboldt Guest Professor, Germany

Apr. 1990
The University of Electro-Communications, Professor

Mar. 1985 - Dec. 1985
Stanford University, Information Systems Laboratory, Visiting Scholar, 文部省派遣長期在外研究員, United States

May 1980
The University of Electro-Communications, Associate Professor

Apr. 1977
The University of Electro-Communications, Lecturer

Apr. 1975
Canon Inc., R&D Staff

Apr. 1974
The University of Tokyo, Institute of Industrial Science, JSPS Postdoctoral Fellow

Mar. 1974
The University of Tokyo, Graduate School of Engineering, Ph. D., Applied Physics

Mar. 1971
The University of Tokyo, Graduate School of Engineering, ME, Applied Physics

Mar. 1969
The University of Electro-Communications, Faculty of Electro Communications, BE

Mar. 2015 - Feb. 2017
理事長, 国際光技術検定協会, Society

Apr. 2010 - Mar. 2012
幹事長, 日本光学会, Society

Jan. 2007 - Dec. 2009
Board of Directors, SPIE (The International Society for Optical Engineering), Society

Jan. 2007 - Dec. 2009
理事, SPIE（国際光工学会）, Society

Jan. 2008 - Dec. 2008
Strategic Planning Committee, SPIE (The International Society for Optical Engineering), Society

Jan. 2008 - Dec. 2008
戦略計画委員会委員, SPIE（国際光工学会）, Society

Jan. 2008 - Dec. 2008
Nomination Committee, SPIE (The International Society for Optical Engineering), Society

Jan. 2008 - Dec. 2008
推薦委員会委員, SPIE（国際光工学会）, Society

Jan. 2007 - Dec. 2008
Engineering, Science and Technology Policy Committee, SPIE (The International Society for Optical Engineering), Society

Jan. 2007 - Dec. 2008
科学技術政策委員会委員, SPIE（国際光工学会）, Society

Jan. 2004 - Dec. 2005
Chair, Fellows Committee, SPIE (The International Society for Optical Engineering), Society

Jan. 2004 - Dec. 2005
フェロー審査委員長, SPIE（国際光工学会）, Society

2003 - 2005
業績賞委員会委員, 応用物理学会, Society

Jan. 2003 - Dec. 2003
Board of Directors, SPIE (The International Society for Optical Engineering), Society

Jan. 2003 - Dec. 2003
理事, SPIE（国際光工学会）, Society

Jan. 2003 - Dec. 2003
Stratigic Planning Committee, SPIE (The International Society for Optical Engineering), Society

Jan. 2003 - Dec. 2003
戦略計画委員会委員, SPIE（国際光工学会）, Society

Jan. 1994 - Dec. 2003
Associate Editor, Optical Review, The Optical Society of Japan, Society

May 2003
President's Asian Advisory Committee, SPIE (The International Society for Optical Engineering), Society

May 2003
アジア諮問委員会委員, SPIE（国際光工学会）, Society

2003
光・電子集積技術業績賞（林厳雄賞）選考委員会委員, 応用物理学会, Society

2001 - 2001
論文賞委員会委員, 応用物理学会, Society

Jan. 1995 - Dec. 1999
評議員, 応用物理学会, Society

1998 - 1999
副幹事長, 日本光学会, Society

1998 - 1998
推薦委員会委員, 応用物理学会, Society

Jan. 1993 - Dec. 1994
理事, 応用物理学会, Society

1983 - 1985
JJAP編集委員, 応用物理学会, Society

Mar. 2022
The Japan Society of Applied Physics
Contributions to the development of optical engineering through pioneering work in the fields of optical metrology, information optics, and imaging
Optical Engineering Award (Takano Eiichi Award), Mitsuo Takeda

Sep. 2020
The Optical Society
The inventions of Fourier fringe analysis and coherence holography
Emmett N. Leith Medal, Mitsuo Takeda
International academic award, United States

Jun. 2018
精密工学会（メカノフォトニクス専門委員会）
光計測分野における貢献
吉澤業績賞, 武田光夫

Aug. 2017
SPIE (International Society for Opics and Photonics) USA
The invention of the Fourier fringe analysis and its many industrial applications.
The SPIE Chandra S. Vikram Award, Mitsuo Takeda
International academic award, United States

Mar. 2013
Alexander von Humboldt Foundation, (Germany)
Achievements of research and education in the field of applied optics
Humboldt Research Award, Mitsuo Takeda
International academic award, Germany

Mar. 2012
The Japan Society of Applied Physics
The invention of Fourier fringe analysis and the developments of its application areas
Optics and Quantum Electronics Achievement Award (Hiroshi Takuma Award) Japan Society of Applied Physics, Mitsuo Takeda
Japan

Apr. 2011
Megurokai (Alumini Association of the University of Electro-Communications)
Achievements in optical research and education
Dishtinguished Alumni Award, Mitsuo Takeda
Others, Japan

Aug. 2010
SPIE (International Society for Opics and Photonics)
Eminent contributions to the development of holography and optical metrology
The SPIE Dennis Gabor Award, Mitsuo Takeda
International academic award, United States

Aug. 2007
The Japan Society of Applied Physics
Fellow of JSAP (Japan Society of Applied Physics), Mitsuo Takeda
Japan

Jun. 2007
Fellow of OSA (The Optical Society) USA, Mitsuo Takeda
United States

Sep. 1999
International Order of Knight of Holography
Poland
The Knight of Holography (Castle of Pultusk, Poland), Mitsuo Takeda
Poland

Jul. 1999
USA
Fellow of SPIE (The International Society for Optical Engineering), Mitsuo Takeda
United States

Preliminary experimental evaluation of microscopic imaging through thick biological tissues based on in-line phase-shift digital holography using near-infrared light
Manami Ohta; Shutaro Kodama; Kanami Ikeda; Yutaka Kano; Yoko Miyamoto; Wolfgang Osten; Mitsuo Takeda; Eriko Watanabe
Proceedings of SPIE - The International Society for Optical Engineering, 11521, 2020
International conference proceedings

Microscopic 3D imaging through scattering media based on in-line phase-shift digital holography
S. Kodama; K. Ikeda; Y. Miyamoto; W. Osten; M. Takeda; E. Watanabe
Digital Holography & 3-D Imaging (DH), W2B.4-1-W2B.4-2, May 2019, Peer-reviwed
International conference proceedings, English

Recent progress on the unified theory of polarization and coherence for stochastic electromagnetic fields
Wei Wang; Juan Zhao; Xiaoying Hu; Steen G. Hanson; Mitsuo Takeda
Proceedings of SPIE - The International Society for Optical Engineering, SPIE, 10612, 2018, Peer-reviwed
International conference proceedings, English

Scatter-plate microscope for lensless microscopy with diffraction limited resolution
Alok Kumar Singh; Giancarlo Pedrini; Mitsuo Takeda; Wolfgang Osten
SCIENTIFIC REPORTS, 7, Sep. 2017, Peer-reviwed
Scientific journal, English

Exploiting scattering media for exploring 3D objects
Alok Kumar Singh; Dinesh N. Naik; Giancarlo Pedrini; Mitsuo Takeda; Wolfgang Osten
LIGHT-SCIENCE & APPLICATIONS, 6, Feb. 2017, Peer-reviwed
Scientific journal, English

Experimental study on degree of coherence for stochastic electromagnetic fields
Juan Zhao; Mitsuo Takeda; Wei Wang
HOLOGRAPHY, DIFFRACTIVE OPTICS, AND APPLICATIONS VII, 10022, 100222D, 2017
International conference proceedings, English

3D polarization speckle as a demonstration of tensor version of the van Cittert-Zernike theorem for stochastic electromagnetic beams
Ning Ma; Juan Zhao; Steen G. Hanson; Mitsuo Takeda; Wei Wang
HOLOGRAPHY, DIFFRACTIVE OPTICS, AND APPLICATIONS VII, 10022, 100222F, 2017
International conference proceedings, English

Holographic correloscopy for imaging a 3-D object hidden behind a diffuser: A review
M. Takeda; A. K. Singh; D. N. Naik; G. Pedrini; W. Osten
Technical Digest, International Symposium on Optical Memory 2016, ISOM’16 (Kyoto, Japan), 146-147, Oct. 2016, Invited
International conference proceedings, English

Holographic Correloscopy-Unconventional Holographic Techniques For Imaging a Three-Dimensional Object Through an Opaque Diffuser or Via a Scattering Wall: A Review
Mitsuo Takeda; Alok Kumar Singh; Dinesh Narayana Naik; Giancarlo Pedrini; Wolfgang Osten
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, 12, 4, 1631-1640, Aug. 2016, Peer-reviwed, Invited
Scientific journal, English

Enhanced intensity variation for multiple-plane phase retrieval using a spatial light modulator as a convenient tunable diffuser
Percival F. Almoro; Quang Duc Pham; David Ignacio Serrano-Garcia; Satoshi Hasegawa; Yoshio Hayasaki; Mitsuo Takeda; Toyohiko Yatagai
OPTICS LETTERS, 41, 10, 2161-2164, May 2016, Peer-reviwed
Scientific journal, English

Coherence holography and photon-correlation holography for imaging a 3-D object hidden behind a diffuser
M. Takeda
Symposium on super adaptive optics with wave field correction: Toward perfect imaging of the universe and live organisms, National Astronomical Observatory Japan, Mar. 2016, Invited
Symposium, English

Real-time 3D lensless imaging through scattering media
Alok Kumar Singh; Dinesh N. Naik; Giancarlo Pedrini; Mitsuo Takeda; Wolfgang Osten
OPTICAL MEASUREMENT TECHNIQUES FOR STRUCTURES & SYSTEMS III, 289-296, 2016, Peer-reviwed
International conference proceedings, English

Coherence and polarization of polarization speckle generated by a rough-surfaced retardation plate depolarizer
Ning Ma; Steen G. Hanson; Mitsuo Takeda; Wei Wang
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 32, 12, 2346-2352, Dec. 2015, Peer-reviwed
Scientific journal, English

Holographic correloscopy for imaging a 3-D object hidden behind a diffuser: A review
M. Takeda; A. K. Singh; D. N. Naik; G. Pedrini; W. Osten
International Workshop on Holography and Related Technologies 2015, IWH 2015 Digest (Okinawa, Japan), Tu1-1, 22-23, Dec. 2015, Invited
International conference proceedings, English

Statistics of the derivatives of complex signal derived from Riesz transform and its application to pseudo-Stokes vector correlation for speckle displacement measurement
Shun Zhang; Yi Yang; Steen G. Hanson; Mitsuo Takeda; Wei Wang
APPLIED OPTICS, 54, 28, 8561-8565, Oct. 2015, Peer-reviwed
Scientific journal, English

Fourier fringe analysis and its application to metrology of extreme physical phenomena: a review
M. Takeda
International Symposium on 3-D Imaging, Metrology, and Data Security, (Shenzen, China), Sep. 2015, Invited
International conference proceedings, English

Real-time imaging through thin scattering layer and looking around the opaque surface
A. K. Singh; D. N. Naik; G. Pedrini; M. Takeda; W. Osten
Digital Holography and Three-Dimensional Imaging (Shanghai, China), DTh3A.5, 24-28, May 2015
International conference proceedings, English

A comparison of diffracting and non-diffracting coherence functions based on full-field spatial coherence visualization system
Juan Zhao; Mitsuo Takeda; Wei Wang
INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014), 9449, 2015, Peer-reviwed
International conference proceedings, English

Coherence and Polarization of Polarization Speckle Generated by Depolarizers and Their Changes through Complex ABCD Matrix
Ning Ma; Steen G. Hanson; Tim K. Lee; Mitsuo Takeda; Wei Wang
SPECKLE 2015: VI INTERNATIONAL CONFERENCE ON SPECKLE METROLOGY, 9660, 2015, Peer-reviwed
International conference proceedings, English

Fourier Fringe Demodulation
M. Takeda
P. Rastogi and E. Hack Eds., Phase Estimation in Optical Interferometry, CRC Press, Boca Raton, Chap.1, 1-30, 2015, Peer-reviwed, Invited
International conference proceedings, English

Riesz transforms in statistical signal processing and their applications to speckle metrology: a review
Wei Wang; Shun Zhang; Ning Ma; Steen G. Hanson; Mitsuo Takeda
INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014), 9449, 944904-1-944904-9, 2015, Invited
International conference proceedings, English

Spatial Statistical Optics and Spatial Correlation Holography: A Review
Mitsuo Takeda; Wei Wang; Dinesh N. Naik; Rakesh K. Singh
OPTICAL REVIEW, 21, 6, 849-861, Nov. 2014, Peer-reviwed, Invited
Scientific journal, English

Characterization of spatial polarization fluctuations in scattered field
Rakesh Kumar Singh; Dinesh N. Naik; Hitoshi Itou; Yoko Miyamoto; Mitsuo Takeda
JOURNAL OF OPTICS, 16, 10, 105010 (12pp), Oct. 2014, Peer-reviwed
Scientific journal, English

Measurement of extreme physical phenomena by Fourier fringe analysis: from sub-Ångstrom lattice distortion measurement to attosecond range pulse phase measurement
M. Takeda
International Conference on Photonics and Optical Engineering, icPOE 2014 (Xian, China), 21, Oct. 2014, Invited
International conference proceedings, English

Recent advances in digital holography [Invited]
Wolfgang Osten; Ahmad Faridian; Peng Gao; Klaus Koerner; Dinesh Naik; Giancarlo Pedrini; Alok Kumar Singh; Mitsuo Takeda; Marc Wilke
APPLIED OPTICS, 53, 27, G44-G63, Sep. 2014, Peer-reviwed, Invited
Scientific journal, English

Evaluation of Energy Flow Across an Optical Beam
Y. Miyamoto; A. Wada; T. Yonemura; M. Takeda
Optical Manipulation Conference (OMC '14), OMC8-5-1-OMC8-5-2, Apr. 2014, Peer-reviwed
International conference proceedings, English

Looking through a diffuser and around an opaque surface: A holographic approach
Alok Kumar Singh; Dinesh N. Naik; Giancarlo Pedrini; Mitsuo Takeda; Wolfgang Osten
OPTICS EXPRESS, 22, 7, 7694-7701, Apr. 2014, Peer-reviwed
Scientific journal, English

Spectrally resolved incoherent holography: 3D spatial and spectral imaging using a Mach-Zehnder radial-shearing interferometer
Dinesh N. Naik; Giancarlo Pedrini; Mitsuo Takeda; Wolfgang Osten
OPTICS LETTERS, 39, 7, 1857-1860, Apr. 2014, Peer-reviwed
Scientific journal, English

Measurement of Energy Flow in an Optical Beam with Inverting Vortex
Y. Miyamoto; A. Wada; T. Yonemura; M. Takeda
9th International Conference on Optics-photonics Design and Fabrication (ODF '14) Technical Digest, 14S3-05-1-14S3-05-2, Feb. 2014, Peer-reviwed
International conference proceedings, English

Computational interferometry: A tutorial overview
M. Takeda
9th International Conference on Optics-photonics Design and Fabrication, ODF’14 (Itabashi, Japan), 93-94, Feb. 2014, Invited
International conference proceedings, English

Holographic spectral imaging of self-luminous objects using Mach-Zehnder radial shear interferometer with in situ calibration
D. N. Naik; G. Pedrini; W. Osten; M. Takeda
9th International Conference on Optics-photonics Design and Fabrication, ODF’14 (Itabashi, Japan), 423-424, Feb. 2014
International conference proceedings, English

Phase retrieval methods for optical imaging and metrology
G. Pedrini; A. Faridian; P. Gao; D. Naik; A. Singh; W. Osten; M. Takeda
2014 13TH WORKSHOP ON INFORMATION OPTICS (WIO), 2014, Peer-reviwed
International conference proceedings, English

Spatial stationarity of statistical optical fields for correlation holography
Mitsuo Takeda
Fringe 2013 - 7th International Workshop on Advanced Optical Imaging and Metrology, springer berlin, 143-148, 2014
International conference proceedings, English

Holographic imaging of a 3D object hidden behind a diffuser or around a corner
Alok Kumar Singh; Dinesh Narayana Naik; Giancarlo Pedrini; Mitsuo Takeda; Wolfgang Osten
Fringe 2013 - 7th International Workshop on Advanced Optical Imaging and Metrology, springer berlin, 377-382, 2014
International conference proceedings, English

Ultra high-precision wavefront metrology using EUV low brightness source
Katsura Otaki; Naoki Kohara; Katsumi Sugisaki; Yoshinori Ichikawa; Yucong Zhu; Katsuhiko Murakami; Chidane Ouchi; Seima Kato; Masanobu Hasegawa; Tokuyuki Honda; Mitsuo Takeda
Fringe 2013 - 7th International Workshop on Advanced Optical Imaging and Metrology, springer berlin, 385-392, 2014, Invited
International conference proceedings, English

Transverse polarization structure of an optical vortex beam around the unfolding point in a birefringent crystal
Maruthi Manoj Brundavanam; Yoko Miyamoto; Mitsuo Takeda; Ken'ichi Nakagawa
Fringe 2013 - 7th International Workshop on Advanced Optical Imaging and Metrology, springer berlin, 611-615, 2014
International conference proceedings, English

Recording of 3D spatial and spectral information of self-luminous objects using a mach-zehnder radial shearing interferometer
Dinesh Narayana Naik; Giancarlo Pedrini; Mitsuo Takeda; Wolfgang Osten
Fringe 2013 - 7th International Workshop on Advanced Optical Imaging and Metrology, springer berlin, 715-718, 2014
International conference proceedings, English

Unconventional implementations and applications of digital holography
W. Osten; D. N. Naik; G. Pedrini; A. K. Singh; M. Takeda
Optics & Photonics Taiwan (OPTIC 2013), (Zhongli, Taiwan), Dec. 2013, Invited
International conference proceedings, English

Vectorial van Cittert-Zernike theorem based on spatial averaging: experimental demonstrations
R. K. Singh; D. N. Naik; H. Itou; M. M. Brundavanam; Y. Miyamoto; M. Takeda
Optics Letters, 38, 22, 4809-4812, Nov. 2013, Peer-reviwed
Scientific journal, English

Vectorial van Cittert-Zernike theorem based on spatial averaging: experimental demonstrations
Rakesh Kumar Singh; Dinesh N. Naik; Hitoshi Itou; Maruthi M. Brundabanam; Yoko Miyamoto; Mitsuo Takeda
OPTICS LETTERS, 38, 22, 4809-4812, Nov. 2013, Peer-reviwed
Scientific journal, English

Spatial statistical optics for correlation holography
M. Takeda
Proc. 2013 Japan-Taiwan Bilateral Symposium in Nano/Bio-Photonics (Hamamatsu, Japan), 19-20, Nov. 2013, Invited

Spatial stationarity of statistical optical fields for coherence holography and photon correlation holography
Mitsuo Takeda
OPTICS LETTERS, 38, 17, 3452-3455, Sep. 2013, Peer-reviwed
Scientific journal, English

Synthetic statistical optics for coherence shaping," VIII Iberoamerican Conference on Optics
M. Takeda
XI Latin-american meeting on Optics, Lasers and Applications (Port, Portugal), Jul. 2013, Invited
International conference proceedings, English

Detailed measurement of the phase distribution of an optical beam with inverting vortex
Yoko Miyamoto; Atsushi Wada; Takashi Yonemura; Mitsuo Takeda
JOURNAL OF OPTICS, 15, 4, 044002 (7pp), Apr. 2013, Peer-reviwed
Scientific journal, English

Characterization and compensation of phase distortions in holograms for generating and detecting doughnut beams
Yoko Miyamoto; Koichi Bito; Yusuke Ozaki; Atsushi Wada; Mitsuo Takeda
OPTICAL REVIEW, 20, 2, 127-131, Mar. 2013, Peer-reviwed
Scientific journal, English

Fourier fringe analysis and its application to metrology of extreme physical phenomena: a review
Mitsuo Takeda
APPLIED OPTICS, 52, 1, 20-29, Jan. 2013, Peer-reviwed, Invited
Scientific journal, English

Recent progress in statistical information optics: Statistical information processing for optics
Wei Wang; Juan Zhao; Mitsuo Takeda
Proceedings of SPIE - The International Society for Optical Engineering, SPIE, 9066, 906603, 2013, Invited
International conference proceedings, English

Relation between vectorial source structure and coherencepolarization of light
Rakesh Kumar Singh; Dinesh N. Naik; Hitoshi Itou; Maruthi M. Brundavanam; Yoko Miyamoto; Mitsuo Takeda
Proceedings of SPIE - The International Society for Optical Engineering, 8788, 87880O, 2013
International conference proceedings, English

Polarization Structure of an Optical Vortex Beam near its Unfolding Point in a Birefringent Crystal
M. M. Brundavanam; Y. Miyamoto; M. Takeda; K. Nakagawa
International Workshop on Laser Science (IWLS), P-21, Oct. 2012
International conference proceedings, English

Coherence holography: Principle and applications
Mitsuo Takeda; Daniel Weiß; Dinesh N. Naik
Optical Imaging and Metrology: Advanced Technologies, Wiley-VCH, Chap. 11, 239-253, 23 Aug. 2012, Invited
In book, English

Coherence holography: Principle and applications
Mitsuo Takeda; Daniel Weiß; Dinesh N. Naik
Optical Imaging and Metrology: Advanced Technologies, Wiley-VCH, 239-253, 23 Aug. 2012, Invited
In book, English

Observation of spatial polarization structure near unfolding point of an optical vortex beam using a birefringent Mach-Zehnder interferometer
M. M. Brundavanam; Y. Miyamoto; R. K. Singh; D. N. Naik; M. Takeda; K. Nakagawa
The Nature of Light: Light in Nature IV, Proc. SPIE, 8480, 848008, Aug. 2012, Peer-reviwed
International conference proceedings, English

Coherence holography by achromatic 3-D field correlation of generic thermal light with an imaging Sagnac shearing interferometer
Dinesh N. Naik; Takahiro Ezawa; Rakesh Kumar Singh; Yoko Miyamoto; Mitsuo Takeda
OPTICS EXPRESS, 20, 18, 19658-19669, Aug. 2012, Peer-reviwed
Scientific journal, English

Single-shot full-field interferometric polarimeter with an integrated calibration scheme
Dinesh N. Naik; Rakesh Kumar Singh; Hitoshi Itou; Maruthi M. Brundavanam; Yoko Miyamoto; Mitsuo Takeda
OPTICS LETTERS, 37, 15, 3282-3284, Aug. 2012, Peer-reviwed
Scientific journal, English

See-through imaging of 3-D object hidden behind a diffuser by unconventional correlation holography
M. Takeda
4th International Workshop on Perspectives of Optical Imaging and Metrology, HOLOMET 2012 (Utsunomiya, Japan), 36, Jul. 2012, Invited
International conference proceedings, English

Coherence Holography: Unconventional imaging with a synthetic coherence function
M. Takeda
8th International Conference on Optics-photonics Design & Fabrication, ODF’12 (St. Petersburg, Russia), 189-190, Jul. 2012, Invited
International conference proceedings, English

Characterization and compensation of phase distortions in holograms for generating and detecting doughnut beams
Y. Miyamoto; K. Bito; Y. Ozaki; A. Wada; M. Takeda
8th International Conference on Optics-photonics Design & Fabrication, ODF’12 (St. Petersburg, Russia), 27-28, Jul. 2012
International conference proceedings, English

Interferometric Astro-coronagraphy
A. Tavrov; T. Kurokawa; J. Nishikawa; M. Takeda
8th International Conferece on Optics-photonics Design & Fabrication, ODF’12 (St. Petersburg, Russia), 313-314, Jul. 2012
International conference proceedings, English

Interferometer setup for the observation of polarization structure near the unfolding point of an optical vortex beam in a birefringent crystal
Maruthi M. Brundavanam; Yoko Miyamoto; Rakesh Kumar Singh; Dinesh N. Naik; Mitsuo Takeda; Ken'ichi Nakagawa
OPTICS EXPRESS, 20, 12, 13573-13581, Jun. 2012, Peer-reviwed
Scientific journal, English

Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial, and angular diversity
Dalip Singh Mehta; Dinesh N. Naik; Rakesh Kumar Singh; Mitsuo Takeda
APPLIED OPTICS, 51, 12, 1894-1904, Apr. 2012, Peer-reviwed
Scientific journal, English

Fourier fringe analysis applied for unconventional scientific and industrial metrologies of extreme physical phenomena: A review
M. Takeda
5th International Conference on Optical Measurement Techniques for Structures and Systems, OPTIMESS 2012, (Antwerp, Belgium), Apr. 2012, Invited
International conference proceedings, English

Stokes holography
Rakesh Kumar Singh; Dinesh N. Naik; Hitoshi Itou; Yoko Miyamoto; Mitsuo Takeda
OPTICS LETTERS, 37, 5, 966-968, Mar. 2012, Peer-reviwed
Scientific journal, English

A coronagraph system with unbalanced nulling interferometer: progresses of dynamic range
Jun Nishikawa; Kaito Yokochi; Naoshi Murakami; Lyu Abe; Takayuki Kotani; Motohide Tamura; Takashi Kurokawa; Alexander Tavrov; Mitsuo Takeda; Hiroshi Murakami
SPACE TELESCOPES AND INSTRUMENTATION 2012: OPTICAL, INFRARED, AND MILLIMETER WAVE, 8442, 2012, Peer-reviwed
International conference proceedings, English

Characterization of polarization speckle
R. K. Singh; D. N. Naik; H. Itou; Y. Miyamoto; M. Takeda
Second International Conference on Trends in Optics and Photonics (ICONTOP 11), 43-48, Dec. 2011, Peer-reviwed
International conference proceedings, English

Photon correlation holography
D. N. Naik; R. K. Singh; T. Ezawa; Y. Miyamoto; M. Takeda
2011 Taiwan-Japan Bilateral Symposium in Nano/Bio-photonics (Tainan, Taiwan), 7-8, Nov. 2011, Invited
International conference proceedings, English

Intensity-correlation holography: a review
D. N. Naik; R. K. Singh; T. Ezawa; Y. Miyamoto; M. Takeda
OIE’11, The Nineth Japan-Finland Joint Symposium on Optics in Engineering, 62-63, Sep. 2011, Peer-reviwed
International conference proceedings, English

Detection of superposition in the orbital angular momentum of photons without excess components and its application in the verification of non-classical correlation
Y. Miyamoto; D. Kawase; M. Takeda; K. Sasaki; S. Takeuchi
Journal of Optics, 13, 6, 064027, Jun. 2011, Peer-reviwed
Scientific journal, English

Vectorial coherence holography
Rakesh Kumar Singh; Dinesh N. Naik; Hitoshi Itou; Yoko Miyamoto; Mitsuo Takeda
OPTICS EXPRESS, 19, 12, 11558-11567, Jun. 2011, Peer-reviwed
Scientific journal, English

Common-path achromatic rotational-shearing coronagraph
Alexander Tavrov; Oleg Korablev; Leonid Ksanfomaliti; Alexander Rodin; Pavel Frolov; Jun Nishikwa; Motohide Tamura; Takashi Kurokawa; Mitsuo Takeda
OPTICS LETTERS, 36, 11, 1972-1974, Jun. 2011, Peer-reviwed
Scientific journal, English

Coherence Holography: A Tutorial Review
M. Takeda
OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging (DH), (Tokyo, Japan), DTuE2, May 2011, Invited
International conference proceedings, English

Holographic reconstruction using intensity interferometry
D. N. Naik; R. K. Singh; T. Ezawa; Y. Miyamoto; M. Takeda
OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging (DH), DWD, May 2011
International conference proceedings, English

Realtime 3D profilometer using GPU and multicore CPU
Y. Miyamoto; A. Wada; T. Iizuka; T. Suzuki; T. Nakayama; K. Yanagawa; S. Aoki; T. Toriu; M. Kawana; T. Nishino; M. Takeda
OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging (DH), DTuC, May 2011
International conference proceedings, English

Holographic control of coherence and polarization of light
R. K. Singh; D. Naik; H. Itou; Y. Miyamoto; M. Takeda
OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging (DH), DTuB2, May 2011
International conference proceedings, English

Speckle level suppression using an unbalanced nulling interferometer in a high-contrast imaging system
Kaito Yokochi; Naoshi Murakami; Jun Nishikawa; Lyu Abe; Motohide Tamura; Alexander V. Tavrov; Mistuo Takeda; Takashi Kurokawa
OPTICS EXPRESS, 19, 6, 4957-4969, Mar. 2011, Peer-reviwed
Scientific journal, English

Optical Vortex Metrology
Wei Wang; Steen G. Hanson; Mitsuo Takeda
Advances in Speckle Metrology and Related Techniques, Wiley-VCH, Chap.5, 207-238, 21 Feb. 2011, Invited
In book, English

Measurements of extreme physical phenomena by Fourier fringe analysis: a review
Mitsuo Takeda
22ND CONGRESS OF THE INTERNATIONAL COMMISSION FOR OPTICS: LIGHT FOR THE DEVELOPMENT OF THE WORLD, 8011, paper 2284573, 2011, Invited
International conference proceedings, English

Coherence Holography: Principle and Applications
M. Takeda; W. Wang; D. N. Naik; Y. Miyamoto
Proc. XXXV Symposium of Optical Society of India, International Conference on Contemporary Trends in Optics and Opto Electronics (Thiruvananthapuram, India), 8-9, Jan. 2011, Invited
International conference proceedings, English

Highly Stable Interferometric technique for polarization mapping
Dinesh N. Naik; Rakesh Kumar Singh; Hitoshi Itou; Yoko Miyamoto; Mitsuo Takeda
PHOTONICS 2010: TENTH INTERNATIONAL CONFERENCE ON FIBER OPTICS AND PHOTONICS, 8173, 817319-1-8, 2011
International conference proceedings, English

Photon correlation holography
Dinesh N. Naik; Rakesh Kumar Singh; Takahiro Ezawa; Yoko Miyamoto; Mitsuo Takeda
OPTICS EXPRESS, 19, 2, 1408-1421, Jan. 2011, Peer-reviwed
Scientific journal, English

Absolute surface profilometry of an object with large gaps by means of monochromatic laser interferometry
Zhiqiang Liu; Kiyoshi Uchikawa; Mitsuo Takeda
OPTICAL MEASUREMENT SYSTEMS FOR INDUSTRIAL INSPECTION VII, 8082, 80820R-1-6, 2011
International conference proceedings, English

Stokes holography for recording and reconstructing objects using polarization fringes
Rakesh Kumar Singh; Dinesh N. Naik; Hitoshi Itou; Yoko Miyamoto; Mitsuo Takeda
OPTICAL MEASUREMENT SYSTEMS FOR INDUSTRIAL INSPECTION VII, 8082, 808208-1-10, 2011, Peer-reviwed
International conference proceedings, English

State of polarization mapping using a calibrated interferometric polarimeter
Dinesh N. Naik; Rakesh Kumar Singh; Hitoshi Itou; Yoko Miyamoto; Mitsuo Takeda
OPTICAL MEASUREMENT SYSTEMS FOR INDUSTRIAL INSPECTION VII, 8082, 80821T-1-7, 2011
International conference proceedings, English

Verification of non-classical correlation in orbital angular momentum of photons without excess components
Yoko Miyamoto; Daisuke Kawase; Mitsuo Takeda; Keiji Sasaki; Shigeki Takeuchi
2011 Int. Quantum Electron. Conf., IQEC 2011 and Conf. Lasers and Electro-Optics, CLEO Pacific Rim 2011 Incorporating the Australasian Conf. Optics, Lasers and Spectroscopy and the Australian Conf., 2067-2068, 2011
International conference proceedings, English

Coherence holography and photon-correlation holography: Marriage between holography and statistical optics
Mitsuo Takeda; Wei Wang; Dinesh N. Naik
TRIBUTE TO JOSEPH W. GOODMAN, 8122, 822207-1-5, 2011, Invited
International conference proceedings, English

Detection of higher-dimensional effects in orbital-angular-momentum entangled photon pairs
Y. Miyamoto; S. Aoki; D. Kawase; Y. Ozaki; S. Takeuchi; S. Zwick; M. Takeda; K. Sasaki
3rd International Conference on Updating Quantum Cryptography and Communications, 71, Oct. 2010
International conference proceedings, English

Statistics of spatial derivatives of Stokes parameters for isotropic random polarization field
Shun Zhang; Mitsuo Takeda; Wei Wang
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 27, 9, 1999-2003, Sep. 2010, Peer-reviwed
Scientific journal, English

Improved illumination system for spatial coherence control
Zhiqiang Liu; Takashi Gemma; Joseph Rosen; Mitsuo Takeda
APPLIED OPTICS, 49, 16, D12-D16, Jun. 2010, Peer-reviwed
Scientific journal, English

Polarization interferometric nulling coronagraph for high-contrast imaging
Naoshi Murakami; Kaito Yokochi; Jun Nishikawa; Motohide Tamura; Takashi Kurokawa; Mitsuo Takeda; Naoshi Baba
APPLIED OPTICS, 49, 16, D106-D114, Jun. 2010, Peer-reviwed
Scientific journal, English

Real-time coherence holography
Dinesh N. Naik; Takahiro Ezawa; Yoko Miyamoto; Mitsuo Takeda
OPTICS EXPRESS, 18, 13, 13782-13787, Jun. 2010, Peer-reviwed
Scientific journal, English

Unneeded azimuthal components in detection of photon orbital angular momentum superposition states
Y. Miyamoto; S. Aoki; D. Kawase; Y. Ozaki; S. Takeuchi; S. Zwick; M. Takeda; K. Sasaki
17th Central-European Workshop on Quantum Optics, 1, Jun. 2010, Peer-reviwed
International conference proceedings, English

400 Years of Optical Instrumentation: feature introduction
Daniel Malacara; Joanna Schmit; Malgorzata Kujawinska; Mitsuo Takeda
APPLIED OPTICS, 49, 16, YO11-YO11, Jun. 2010, Peer-reviwed
Scientific journal, English

Phase-shift coherence holography
Dinesh N. Naik; Takahiro Ezawa; Yoko Miyamoto; Mitsuo Takeda
OPTICS LETTERS, 35, 10, 1728-1730, May 2010, Peer-reviwed
Scientific journal, English

Pseudo-Stokes Vector Correlation From Complex Signal Representation of a Speckle Pattern and Its Applications to Micro-Displacement Measurement
W. Wang; R. Ishijima; A. Matsuda; S. G. Hanson; M. Takeda
STRAIN, 46, 1, 12-18, Feb. 2010, Peer-reviwed
Scientific journal, English

A Coronagraph with an Unbalanced Nulling Interferometer and Adaptive Optics
J. Nishikawa; K. Yokochi; N. Murakami; L. Abe; T. Kotani; M. Tamura; T. Kurokawa; A. V. Tavrov; M. Takeda
PATHWAYS TOWARDS HABITABLE PLANETS, 430, 513-+, 2010, Peer-reviwed
International conference proceedings, English

Polarization speckles and generalized Stokes vector wave: a review
Mitsuo Takeda; Wei Wang; Steen G. Hanson
SPECKLE 2010: OPTICAL METROLOGY, 7387, 2010, Peer-reviwed
International conference proceedings, English

Conservation laws in quantum-correlation-function dynamics
Wei Wang; Mitsuo Takeda
Advances in Optical Technologies, 2010, Article ID 171254, 1-8, 2010, Peer-reviwed
Scientific journal, English

A coronagraph system with unbalanced nulling interferometer: progresses of wavefront correction
Jun Nishikawa; Kaito Yokochi; Naoshi Murakami; Lyu Abe; Takayuki Kotani; Motohide Tamura; Takashi Kurokawa; Alexander V. Tavrov; Mitsuo Takeda; Hiroshi Murakami
SPACE TELESCOPES AND INSTRUMENTATION 2010: OPTICAL, INFRARED, AND MILLIMETER WAVE, 7731, 77314O1-6, 2010, Peer-reviwed
International conference proceedings, English

3-D coherence holography using a commercial projector for display and incoherent illumination of a coherence hologram
Dinesh N. Naik; Takahiro Ezawa; Rakesh Kumar Singh; Yoko Miyamoto; Mitsuo Takeda
INTERFEROMETRY XV: TECHNIQUES AND ANALYSIS, 7790, 77900Q1-8, 2010
International conference proceedings, English

Theoretical and experimental investigation of statistics of spatial derivatives of Stokes parameters for polarization speckle
Shun Zhang; Paul Roulleau; Akihiro Matsuda; Mitsuo Takeda; Wei Wang
INTERFEROMETRY XV: TECHNIQUES AND ANALYSIS, 7790, 77900N1-8, 2010, Peer-reviwed
International conference proceedings, English

Experimental investigation of critical points in optical coherence function
Wei Wang; Vasilij Vasil'ev; Marat Soskin; Mitsuo Takeda
NATURE OF LIGHT: LIGHT IN NATURE III, 7782, 77820A1-7, 2010, Peer-reviwed
International conference proceedings, English

Vortices in generalized Stokes parameters
Rakesh Kumar Singh; Dinesh N. Naik; Hitoshi Itou; Yoko Miyamoto; Mitsuo Takeda
NATURE OF LIGHT: LIGHT IN NATURE III, 7782, 7782091-7782099, 2010, Peer-reviwed
International conference proceedings, English

Coherence holography for real-time object recording and reconstruction
D. N. Naik; T. Ezawa; Y. Miyamoto; M. Takeda
7th International Conference on Optics-photonics Design and Fabrication (ODF '10), 17-18, 2010, Peer-reviwed
International conference proceedings, English

Spatial coherence profilometry on tilted surfaces
Pavel Pavlicek; Marek Halouzka; Zhihui Duan; Mitsuo Takeda
APPLIED OPTICS, 48, 34, H40-H47, Dec. 2009, Peer-reviwed
Scientific journal, English

A Theory of Phase Singularities for Image Representation and its Applications to Object Tracking and Image Matching
Yu Qiao; Wei Wang; Nobuaki Minematsu; Jianzhuang Liu; Mitsuo Takeda; Xiaoou Tang
IEEE TRANSACTIONS ON IMAGE PROCESSING, 18, 10, 2153-2166, Oct. 2009, Peer-reviwed
Scientific journal, English

Higher-dimensional entanglement effects in the detection of orbital angular momentum entangled photon pairs using hologram
Y. Miyamoto; D. Kawase; M. Takeda; K. Sasaki; S. Takeuchi
18th International Laser Physics Workshop (LPHYS '09), 557, Jul. 2009, Peer-reviwed
International conference proceedings, English

Achromatic deep nulling with a three-dimensional Sagnac interferometer
Kaito Yokochi; Alexander V. Tavrov; Jim Nishikawa; Naoshi Murakami; Lyu Abe; Motohide Tamura; Mitsuo Takeda; Takashi Kurokawa
OPTICS LETTERS, 34, 13, 1985-1987, Jul. 2009, Peer-reviwed
Scientific journal, English

Polarization singularities generated by a Laguerre-Gaussian beam and a Gaussian beam
Y. Miyamoto; S. Igarashi; M. Takeda
19th International Conference on Laser Spectroscopy (ICOLS 2009), 251-252, Jun. 2009, Peer-reviwed
International conference proceedings, English

3-D coherence holography using a modified Sagnac radial shearing interferometer with geometric phase shift
Dinesh N. Naik; Takahiro Ezawa; Yoko Miyamoto; Mitsuo Takeda
OPTICS EXPRESS, 17, 13, 10633-10641, Jun. 2009, Peer-reviwed
Scientific journal, English

New Tools and Materials Enabling Half-millimeter Microsurgery
N. Kuroshima; M. Takeda; dn M. Ito
5th Congress of the World Society for Reconstruction Microsurgery, 1, Jun. 2009, Peer-reviwed
International conference proceedings, English

Effect of high-dimensional entanglement of Laguerre-Gaussian modes in parametric downconversion
Daisuke Kawase; Yoko Miyamoto; Mitsuo Takeda; Keiji Sasaki; Shigeki Takeuchi
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 26, 4, 797-804, Apr. 2009, Peer-reviwed
Scientific journal, English

Development of 4th-Order Nulling Coronagraphs for Partially Resolved Stars, Exoplanets and Disks: Their Formation and Diversity
N. Murakami; K. Yokochi; J. Nishikawa; M. Tamura; N. Baba; R. Uemura; N. Hashimoto; L. Abe; A. V. Tavrov; T. Kurokawa; M. Takeda
The 2nd Subaru International Conference, 1, Mar. 2009, Peer-reviwed
International conference proceedings, English

Coherence holography: A thought on synthesis and analysis of optical coherence fields
Mitsuo Takeda; Wei Wang; Dinesh N. Naik
Fringe 2009 - 6th International Workshop on Advanced Optical Metrology, Springer-Verlag Berlin Heidelberg, 14-21, 2009, Peer-reviwed
International conference proceedings, English

Statistics of polarization speckle: Theory versus experiment
Wei Wang; Steen G. Hanson; Mitsuo Takeda
Proceedings of SPIE - The International Society for Optical Engineering, 7388, 2009, Peer-reviwed
International conference proceedings, English

Development of Fourth-order Nulling Coronagraphs for Partially Resolved Stars
N. Murakami; K. Yokochi; J. Nishikawa; M. Tamura; N. Baba; R. Uemura; N. Hashimoto; L. Abe; A. V. Tavrov; T. Kurokawa; M. Takeda
EXOPLANETS AND DISKS: THEIR FORMATION AND DIVERSITY, 1158, 397-398, 2009, Peer-reviwed
International conference proceedings, English

Coronagraph Methods on Precise Wavefront Compensation (UNI-PAC) and Deep Achromatic Nulling
J. Nishikawa; K. Yokochi; N. Murakami; L. Abe; T. Kotani; M. Tamura; T. Kurokawa; A. V. Tavrov; M. Takeda
EXOPLANETS AND DISKS: THEIR FORMATION AND DIVERSITY, 1158, 365-+, 2009, Peer-reviwed
International conference proceedings, English

3-D coherence holography using a modified Sagnac radial shearing interferometer with geometric phase shift
Dinesh N. Naik; Takahiro Ezawa; Yoko Miyamoto; Mitsuo Takeda
HOLOGRAPHY: ADVANCES AND MODERN TRENDS, 7358, 735808, 2009, Peer-reviwed
International conference proceedings, English

High dynamic range optical system for direct detection of exo-planets by unbalanced nulling interferometer and adaptive optics
K. Yokochi; J. Nishikawa; N. Murakami; L. Abe; T. Kotani; M. Tamura; A. V. Tavrov; M. Takeda; T. Kurokawa
2009 CONFERENCE ON LASERS AND ELECTRO-OPTICS AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2009), VOLS 1-5, 489-+, 2009, Peer-reviwed
International conference proceedings, English

Phase analysis error reduction in the Fourier transform method using a virtual interferogram
H. Toba; Z. Liu; S. Udagawa; N. Fujiwara; S. Nakayama; T. Gemma; M. Takeda
Proceedings of SPIE - The International Society for Optical Engineering, 7389, 10.1-9, 2009, Peer-reviwed
International conference proceedings, English

Real-time coherence holography
Dinesh N. Naik; Takahiro Ezawa; Yoko Miyamoto; Mitsuo Takeda
Fringe 2009 - 6th International Workshop on Advanced Optical Metrology, Springer-Verlag Berlin Heidelberg, 28-33, 2009, Peer-reviwed
International conference proceedings, English

Fourier-transform method with high accuracy by use of iterative technique narrowing the spectra of a fringe pattern
S. Nakayama; H. Toba; N. Fujiwara; T. Gemma; M. Takeda
Fringe 2009 - 6th International Workshop on Advanced Optical Metrology, Springer-Verlag Berlin Heidelberg, 106-111, 2009, Peer-reviwed
International conference proceedings, English

Manipulation of optical quNits using geometrical phase
D. Kawase; Y. Miyamoto; M. Takeda; K. Sasaki; S. Takeuchi
International Symposium on Physics of of Quantum Technology, 37, Nov. 2008
International conference proceedings, English

Coherence holography using Sagnac radial shearing interferometer with geometric phase shift
D. N. Naik; T. Ezawa; Y. Miyamoto; M. Takeda
Japan Taiwan Bilateral Science and Technology Symposium, Frontiers in Functional Optics, 116-117, Nov. 2008, Peer-reviwed
International conference proceedings, English

Coherence and polarization of electromagnetic beams modulated by random phase screens and their changes through complex ABCD optical systems
Steen G. Hanson; Wei Wang; Michael L. Jakobsen; Mitsuo Takeda
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 25, 9, 2338-2346, Sep. 2008, Peer-reviwed
Scientific journal, English

Achromatic interfero-coronagraph with two common-path interferometers in tandem
Alexander V. Tavrov; Jun Nishikawa; Motohide Tamura; Lyu Abe; Kaito Yokochi; Takashi Kurokawa; Mitsuo Takeda
APPLIED OPTICS, 47, 27, 4915-4926, Sep. 2008, Peer-reviwed
Scientific journal, English

Constellation of phase singularities in a speckle-like pattern for optical vortex metrology applied to biological kinematic analysis
Wei Wang; Yu Qiao; Reika Ishijima; Tomoaki Yokozeki; Daigo Honda; Akihiro Matsuda; Steen G. Hanson; Mitsuo Takeda
OPTICS EXPRESS, 16, 18, 13908-13917, Sep. 2008, Peer-reviwed
Scientific journal, English

Observing quantum correlation of photons in Laguerre-Gauss modes using the Gouy phase
Daisuke Kawase; Yoko Miyamoto; Mitsuo Takeda; Keiji Sasaki; Shigeki Takeuchi
PHYSICAL REVIEW LETTERS, 101, 5, 050501, Aug. 2008, Peer-reviwed
Scientific journal, English

Birth and evolution of orbital angular coherence momentum associated with coherence vortex
W. Wang; M. Takeda
Photon 08, 24-25, Aug. 2008, Peer-reviwed
International conference proceedings, English

Diagnosis of polarization speckle based on frequency-multiplex Fourier transform method
W. Wang; A. Matsuda; S. G. Hanson; M. Takeda
Photon 08, 49-50, Aug. 2008, Peer-reviwed
International conference proceedings, English

Pseudo Stokes vector correlation for micro-displacement measurement
W. Wang; R. Ishijima; A. Matsuda; S. G. Hanson; M. Takeda
International Conference on Full-field Measurement Techniques and Their Applications in Experimental Solid Mechanics, 1, Jul. 2008, Peer-reviwed
International conference proceedings, English

Optical vortex metrology for nano and bio measurements
W. Wang; S. G. Hanson; M. Takeda
The Rank Prized Fund Mini-symposium on optical aspects of non-destructive testing, 1, May 2008, Peer-reviwed
International conference proceedings, English

Coherence holography and spatial frequency comb for 3-D coherence imaging
Mitsuo Takeda; Wei Wang; Zhihui Duan; Yoko Miyamoto; Joseph Rosen
Optics InfoBase Conference Papers, Optical Society of America, 2008
International conference proceedings, English

Experimental investigation of the singular phenomena in statistical optical fields
Wei Wang; Mitsuo Takeda
NATURE OF LIGHT: LIGHT IN NATURE II, 7057, 2008, Peer-reviwed
International conference proceedings, English

Coherence holography and singular optical coherence
Mitsuo Takeda; Wei Wang
OPTICS AND PHOTONICS FOR INFORMATION PROCESSING II, 7072, 2008, Peer-reviwed
International conference proceedings, English

Achromatic characteristics in 3-D Sagnac interferometer based on geometric phase shift
K. Yokochi; A. V. Tavrov; J. Nishikawa; L. Abe; M. Tamura; M. Takeda; T. Kurokawa
2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9, 720-+, 2008, Peer-reviwed
International conference proceedings, English

Coherence vortices, coherence current, and the conservation laws in coherence dynamics
Wei Wang; Steen G. Hanson; Mitsuo Takeda
8TH INTERNATIONAL CONFERENCE ON CORRELATION OPTICS, 7008, 2008, Peer-reviwed
International conference proceedings, English

Optical vortex metrology: Are phase singularities foes or friends in optical metrology?
Mitsuo Takeda; Wei Wang; Steen G. Hanson; Yoko Miyamoto
8TH INTERNATIONAL CONFERENCE ON CORRELATION OPTICS, 7008, 2008, Peer-reviwed
International conference proceedings, English

Precision interferometry for measuring wavefronts of multi-wavelength optical pickups
Zongtao Ge; Takayuki Saito; Minoru Kurose; Hideo Kanda; Kazuhisa Arakawa; Mitsuo Takeda
OPTICS EXPRESS, 16, 1, 133-143, Jan. 2008, Peer-reviwed
Scientific journal, English

Vortex sheets in optical and coherence fields
Wei Wang; Kentaro Chiba; Steen G. Hanson; Mitsuo Takeda
COMPLEX LIGHT AND OPTICAL FORCES II, 6905, 690506-690513, 2008, Peer-reviwed
International conference proceedings, English

The spatial degree of polarization and the first-order statistical properties of polarization speckle
Wei Wang; Akthiro Matsuda; Steen G. Hanson; Mitsuo Takeda
INTERFEROMETRY XIV: TECHNIQUES AND ANALYSIS, 7063, 70630B1-B9, 2008, Peer-reviwed
International conference proceedings, English

Detection of orbital angular momentum superposition photon states with hologram and path interferometer
Y. Miyamoto; M. Takeda; D. Kawase; S. Takeuchi; K. Sasaki; A. Wada
International Symposium on Coherent Optical Science, 16, Dec. 2007
International conference proceedings, English

Development status of EUV wavefront metrology system (EWMS)
K. Murakami; K. Sugisaki; M. Okada; K. Ohtaki; Z. Yucong; Z. Liu; J. Saito; C. Ouchi; S. Kato; M; Hasegawa, T; Hasegawa; H. Yokota; M. Niibe; M. Takeda
2007 International Extreme Ultraviolet Lithography (EUVL) Symposium, ME-01, Dec. 2007, Peer-reviwed
International conference proceedings, English

Common-path achromatic interferometer-coronagraph: Images from a breadboard demonstrator
Alexander V. Tavrov; Jun Nishikawa; Motohide Tamura; Lyu Abe; Kaito Yokochi; Takashi Kurokawa; Mitsuo Takeda
APPLIED OPTICS, 46, 28, 6885-6895, Oct. 2007, Peer-reviwed
Scientific journal, English

Separation of spin and orbital angular coherence momenta in the second-order coherence theory of vector electromagnetic fields
Wei Wang; Mitsuo Takeda
OPTICS LETTERS, 32, 18, 2656-2658, Sep. 2007, Peer-reviwed
Scientific journal, English

Resolution and noise factor of distance measurement using two-photon absorption process in photodetector
Yosuke Tanaka; Tatsutoshi Shioda; Mitsuo Takeda; Takashi Kurokawa
Japanese Journal of Applied Physics, INSTITUTE OF PURE AND APPLIED PHYSICS, 46, 8, 5331-5337, Aug. 2007, Peer-reviwed, In this paper, we investigate the resolution, accuracy, and noise factor of distance measurement using intensity-modulated light and a photodetector with two-photon absorption (TPA) characteristics. Distance resolution and measurement accuracy are clarified theoretically and experimentally in terms of the sweeping range and the scanning step of the intensity-modulation frequency. The theory of accuracy improvement by signal processing known as the "Fourier transform method" is experimentally confirmed for the first time. The influence of a photodetector's temperature on measurement resolution is also made clear by the experiments. A high resolution is achieved by controlling the photodetector at a low temperature, which is explained from the temperature dependence of TPA sensitivity in the photodetector. In addition to these investigations, we discuss the advantage of the TPA-based distance measurement over other conventional methods such as optical time domain reflectometry from the viewpoints of cost and measurement performance.
Scientific journal, English

Extension of distance measurement range in a sinusoidal wavelength-scanning interferometer using a liquid-crystal wavelength filter with double feedback control
Osami Sasaki; Akihiro Saito; Takamasa Suzuki; Mitsuo Takeda; Takashi Kurokawa
APPLIED OPTICS, 46, 23, 5800-5804, Aug. 2007, Peer-reviwed
Scientific journal, English

Poincare sphere representation for the anisotropy of phase singularities and its applications to optical vortex metrology for fluid mechanical analysis
Wei Wang; Mark R. Dennis; Reika Ishijima; Tomoaki Yokozeki; Akihiro Matsuda; Steen G. Hanson; Mitsuo Takeda
OPTICS EXPRESS, 15, 17, 11008-11019, Aug. 2007, Peer-reviwed
Scientific journal, English

Experimental verification of entanglement in LG modes using holograms and path interferometer
D. Kawase; S. Takeuchi; K. Sasaki; A. Wada; Y. Miyamoto; M. Takeda
Topology and Singularity in Optical Physics, 44, Jul. 2007
International conference proceedings, English

The spatial structures of pseudophase singularities in the analytic signal representation of a speckle pattern and their application to biological kinematic analysis
W. Wang; Y. Qiao; R. Ishijima; T. Yokozeki; D. Honda; A. Matsuda; S. G. Hanson; M. Takeda
International Conference on Experimental Mechanics, ICEM 13, 1, Jul. 2007, Peer-reviwed
International conference proceedings, English

Aberration evaluation of alignment optics in lithographic tools by use of a step-height structure highly sensitive to the asymmetry of an optical image
Hideki Ina; Mitsuo Takeda
APPLIED OPTICS, 46, 17, 3485-3492, Jun. 2007, Peer-reviwed
Scientific journal, English

Low speckle noise coronagraph with UNI+PAC
T. Kotani; J. Nishikawa; K. Yokochi; N. Murakami; L. Abe; M. Tamura; T. Kurokawa; A. Tavrov; M. Takeda
Spirit of Lyot 2007, The Direct Detection of Planets and Circumstellar Disks in the 21st Century, 52, Jun. 2007, Peer-reviwed
International conference proceedings, English

Precise wavefront correction with unbalanced nulling interferometer for direct detection of exo-planet
Kaito Yokochi; Jun Nishikawa; Naoshi Murakami; Lyu Abe; Takayuki Kotani; Motohide Tamura; Takashi Kurokawa; Alexander V. Tavrov; Mitsuo Takeda
2007 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, VOLS 1-4, 393-+, 2007, Peer-reviwed
International conference proceedings, English

Accuracy of distance measurement based on two-photon absorption of Si-photodetector
Tatsuya Oiwa; Tatsutoshi Shioda; Yosuke Tanaka; Mitsuo Takeda; Takashi Kurokawa
Optics InfoBase Conference Papers, 2007
International conference proceedings

Accuracy of distance measurement based on two-photon absorption of Si-photodetector
Tatsuya Oiwa; Tatsutoshi Shioda; Yosuke Tanaka; Mitsuo Takeda; Takashi Kurokawa
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2007
International conference proceedings

Optical vortex metrology: Displacement and flow measurements with phase singularities
Mitsuo Takeda; Wei Wang; Steen G. Hanson; Yoko Myamoto
6TH INTERNATIONAL WORKSHOP ON INFORMATION OPTICS (WIO '07), 949, 185-+, 2007, Peer-reviwed
International conference proceedings, English

Spatial coherence profilometry
Pavel Pavlicek; Zhihui Duan; Mitsuo Takeda
15TH CZECH-POLISH-SLOVAK CONFERENCE ON WAVE AND QUANTUM ASPECTS OF CONTEMPORARY OPTICS, 6609, (16-1)-(16-7), 2007, Peer-reviwed
International conference proceedings, English

Fluid mechanics measurement based on the anisotropic core structure of pseudophase singularities in analytic signal representation of speckle pattern
Wei Wang; Mark R. Dennis; Reika Ishijima; Tomoaki Yokozeki; Akihiro Matsuda; Steen G. Hanson; Mitsuo Takeda
OPTICAL MEASUREMENT SYSTEMS FOR INDUSTRIAL INSPECTION V, PTS 1 AND 2, 6616, 66160W1-6616W8, 2007, Peer-reviwed
International conference proceedings, English

Decomposition of total angular coherence momentum in vectorial coherence theory of electromagnetic fields
Wei Wang; Mitsuo Takeda
6TH INTERNATIONAL WORKSHOP ON INFORMATION OPTICS (WIO '07), 949, 293-294, 2007, Peer-reviwed
International conference proceedings, English

Coherence vortex with orbital angular coherence momentum and wave-particle duality in correlation function - art. no. 66640M
Wei Wang; Mitsuo Takeda
NATURE OF LIGHT: WHAT ARE PHOTONS?, 6664, M6640-M6640, 2007, Peer-reviwed
International conference proceedings, English

Dispersion-free optical coherence depth sensing with a spatial frequency comb generated by an angular spectrum modulator
Zhihui Duan; Yoko Miyamoto; Mitsuo Takeda
OPTICS EXPRESS, 14, 25, 12109-12121, Dec. 2006, Peer-reviwed
Scientific journal, English

Spatial coherence shaping: A new optical design in coherence domain
W. Wang; Z. Duan; S. G. Hanson; M. Takeda
5th International Conference on Optics-photonics Design and Fabrication, ODF'06, 169-170, Dec. 2006, Peer-reviwed
International conference proceedings, English

Coronagraph experiments with dynamic range absorption by pre-optics
J. Nishikawa; N. Murakami; L. Abe; T. Kotani; M. Tamura; K. Yokochi; T Kurokwa; A. Tavrov; M. Takeda
4th International TPF/Darwin Workshop, 1, Nov. 2006, Peer-reviwed
International conference proceedings, English

Optical vortex metrology based on the core structures of phase singularities in Laguerre-Gauss transform of a speckle pattern
Wei Wang; Tomoaki Yokozeki; Reika Ishijima; Mitsuo Takeda
OPTICS EXPRESS, 14, 22, 10195-10206, Oct. 2006, Peer-reviwed
Scientific journal, English

Two-wavelength Talbot effect and its application for three-dimensional step-height measurement
Dalip Singh Mehta; Satish Kumar Dubey; Chandra Shakher; Mitsuo Takeda
APPLIED OPTICS, 45, 29, 7602-7609, Oct. 2006, Peer-reviwed
Scientific journal, English

Coherence Momentum in Second-Order Vectorial Coherence Theory of Stationary Electromagnetic Fields
W. Wang; M. Takeda
Frontiers in Optics 2006, OSA Annual Meeting, JWD43, Oct. 2006, Peer-reviwed
International conference proceedings, English

Experimental observation of the evolution of the fractional topological phase for a coherence function
W. Wang; Z. Duan; S. G. Hanson; M. Takeda
Frontiers in Optics 2006, OSA Annual Meeting, PDP-FB1, Oct. 2006, Peer-reviwed
International conference proceedings, English

Linear and angular coherence momenta in the classical second-order coherence theory of vector electromagnetic fields
Wei Wang; Mitsuo Takeda
OPTICS LETTERS, 31, 17, 2520-2522, Sep. 2006, Peer-reviwed
Scientific journal, English

Complex amplitude correlations of dynamic laser speckle in complex ABCD optical systems
Wei Wang; Steen G. Hanson; Mitsuo Takeda
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 23, 9, 2198-2207, Sep. 2006, Peer-reviwed
Scientific journal, English

Coherence current, coherence vortex, and the conservation law of coherence
Wei Wang; Mitsuo Takeda
PHYSICAL REVIEW LETTERS, 96, 22, Jun. 2006, Peer-reviwed
Scientific journal, English

Phase-crossing algorithm for white-light fringes analysis
ME Pawlowski; Y Sakano; Y Miyamoto; M Takeda
OPTICS COMMUNICATIONS, 260, 1, 68-72, Apr. 2006, Peer-reviwed
Scientific journal, English

Experimental study of coherence vortices: Local properties of phase singularities in a spatial coherence function
W Wang; ZH Duan; SG Hanson; Y Miyamoto; M Takeda
PHYSICAL REVIEW LETTERS, 96, 7, 073902, Feb. 2006, Peer-reviwed
Scientific journal, English

EUVA's challenges toward 0.1nm accuracy in EUV at-wavelength interferometry
K Sugisaki; M Hasegawa; M Okada; YC Zhu; K Otaki; ZQ Liu; M Ishii; J Kawakami; K Murakami; J Saito; S Kato; C Ouchi; A Ohkubo; Y Sekine; T Hasegawa; A Suzuki; M Niibe; M Takeda
FRINGE 2005, 252-+, 2006, Peer-reviwed
International conference proceedings, English

Coherence holography: Holographic imaging with coherence function
Mitsuo Takeda; Wei Wang; Zhihui Duan; Yoko Miyamoto
HOLOGRAPHY 2005: INTERNATIONAL CONFERENCE ON HOLOGRAPHY, OPTICAL RECORDING, AND PROCESSING OF INFORMATION, 6252, 2006, Peer-reviwed
International conference proceedings, English

Coherence holography: Principle and applications
Mitsuo Takeda; Wei Wang; Zhihui Duan; Yoko Miyamoto
SPECKLE06: SPECKLES, FROM GRAINS TO FLOWERS, 6341, 2006, Peer-reviwed
International conference proceedings, English

Experimental study of coherence vortices: Birth and evolution of phase singularities in the spatial coherence function
W Wang; ZH Duan; SG Hanson; Y Miyamoto; M Takeda
FRINGE 2005, 46-+, 2006, Peer-reviwed
International conference proceedings, English

Dispersion-free absolute interferometry based on angular spectrum scanning
ZH Duan; Y Miyamoto; M Takeda
OPTICS EXPRESS, 14, 2, 655-663, Jan. 2006, Peer-reviwed
Scientific journal, English

Optical vortex metrology for nanometric speckle displacement measurement
W Wang; T Yokozeki; R Ishijima; A Wada; Y Miyamoto; M Takeda; SG Hanson
OPTICS EXPRESS, 14, 1, 120-127, Jan. 2006, Peer-reviwed
Scientific journal, English

EUV wavefront metrology at EUVA
Chidane Ouchi; Seima Kato; Masanobu Hasegawa; Takayuki Hasegawa; Hideo Yokota; Katsumi Sugisaki; Masashi Okada; Katsuhiko Murakami; Jun Saito; Masahito Niibe; Mitsuo Takeda
METROLOGY, INSPECTION, AND PROCESS CONTROL FOR MICROLITHOGRAPHY XX, PTS 1 AND 2, 6152, 104, 2006, Peer-reviwed
International conference proceedings, English

Nanometric displacement measurement using phase singularities in Laguerre-Gauss transform of speckle pattern
Wei Wang; Tomoaki Yokozeki; Reika Ishijima; Steen G. Hanson; Mitsuo Takeda
INTERFEROMETRY XIII: TECHNIQUES AND ANALYSIS, 6292, 2006, Peer-reviwed
International conference proceedings, English

Coherence current: contrast flow in coherence function
Wei Wang; Mitsuo Takeda
NATURE OF LIGHT: LIGHT IN NATURE, 6285, 2006, Peer-reviwed
International conference proceedings, English

Absolute speckle interferometry with an angular-spectrum-tunable source
Zhihui Duan; Dong Wei; Akinori Yamada; Yoko Miyamoto; Mitsuo Takeda
SPECKLE06: SPECKLES, FROM GRAINS TO FLOWERS, 6341, (18-1)-(18-5), 2006, Peer-reviwed
International conference proceedings, English

Sub-pixel speckle displacement measurement by using optical vortex metrology
Wei Wang; Tomoaki Yokozeki; Reika Ishijima; Atsushi Wada; Steen G. Hanson; Yoko Miyamoto; Mitsuo Takeda
SPECKLE06: SPECKLES, FROM GRAINS TO FLOWERS, 6341, (17-1)-(17-6), 2006, Peer-reviwed
International conference proceedings, English

Propagation analysis of the Laguerre-Gaussian beam with astigmatism
A Wada; T Ohtani; Y Miyamoto; M Takeda
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 22, 12, 2746-2755, Dec. 2005, Peer-reviwed
Scientific journal, English

Coherence holography
M Takeda; W Wang; ZH Duan; Y Miyamoto
OPTICS EXPRESS, 13, 23, 9629-9635, Nov. 2005, Peer-reviwed
Scientific journal, English

Effect of comatic aberration on the propagation characteristics of laguerre - Gaussian beams
Atsushi Wada; Hiroyuki Ohminato; Takashi Yonemura; Yoko Miyamoto; Mitsuo Takeda
Optical Review, 12, 6, 451-455, Nov. 2005, Peer-reviwed
Scientific journal, English

Common-path achromatic interferometer-coronagraph: nulling of polychromatic light
AV Tavrov; Y Kobayashi; Y Tanaka; T Shioda; Y Otani; T Kurokawa; M Takeda
OPTICS LETTERS, 30, 17, 2224-2226, Sep. 2005, Peer-reviwed
Scientific journal, English

Pseudophase information from the complex analytic signal of speckle fields and its applications. Part I: Microdisplacement observation based on phase-only correlation in the signal domain
W Wang; N Ishii; SG Hanson; Y Miyamoto; M Takeda
APPLIED OPTICS, 44, 23, 4909-4915, Aug. 2005, Peer-reviwed
Scientific journal, English

Pseudophase information from the complex analytic signal of speckle fields and its applications. Part II: Statistical properties of the analytic signal of a white-light speckle pattern applied to the microdisplacement measurement
W Wang; N Ishii; SG Hanson; Y Miyamoto; M Takeda
APPLIED OPTICS, 44, 23, 4916-4921, Aug. 2005, Peer-reviwed
Scientific journal, English

Beam deformation in holographic generation of Lagurerre Gaussian beam caused by hologram distortion
A. Wada; T. Yonemura; Y. Miyamoto; M. Takeda
International Symposium on Coherent Optical Science, PS11, Jul. 2005
International conference proceedings, English

A simple technique for the direct full-field observation of 3-D coherence function with a variable magnification
W. Wang; Z. Duan; Y. Miyamoto; Mitsuo Takeda
IQEC/CLEO-PR 2005, 1505-1506, Jul. 2005, Peer-reviwed
International conference proceedings, English

Verification of measurement basis in experiment of entanglement in orbital angular momentum of photons
D. Kawase; S. Takeuchi; K. Sasaki; A. Wada; Y. Miyamoto; M. Takeda
17th International Conference on Laser Spectroscopy (ICOLS 05), 153, Jun. 2005, Peer-reviwed
International conference proceedings, English

Experiments with the polychromatic light by means of geometric phase
A. Tavrov; T. Kurokawa; M. Takeda
CONO/LAT2005, LSM2, May 2005, Peer-reviwed
International conference proceedings, English

Phase singularities in analytic signal of white-light speckle pattern with application to micro-displacement measurement
W Wang; N Ishii; SG Hanson; Y Miyamoto; M Takeda
OPTICS COMMUNICATIONS, 248, 1-3, 59-68, Apr. 2005, Peer-reviwed
Scientific journal, English

プリズム角度と面形状の高精度測定：干渉角度計とその応用
葛宗濤; 齋藤隆行; 大井重徳; 武田光夫
光アライアンス, 日本工業出版, 16, 4, 49-51, Apr. 2005
Japanese

Experimental investigation of local properties and statistics of optical vortices in random wave fields
W Wang; SG Hanson; Y Miyamoto; M Takeda
PHYSICAL REVIEW LETTERS, 94, 10, 103902, Mar. 2005, Peer-reviwed
Scientific journal, English

Optical frequency-domain reflectometry with a rapid wavelength-scanning superstructure-grating distributed Bragg reflector laser
Takuji Amano; Hideaki Hiro-Oka; Donghak Choi; Hiroyuki Furukawa; Fumiyoshi Kano; Mituo Takeda; Motoi Nakanishi; Kimiya Shimizu; Kohji Ohbayashi
Applied Optics, OSA - The Optical Society, 44, 5, 808-816, 10 Feb. 2005, Peer-reviwed
Scientific journal, English

Optical frequency-domain reflectometry with a rapid wavelength-scanning superstructure-grating distributed Bragg reflector laser
T Amano; H Hiro-Oka; D Choi; H Furukawa; F Kano; M Takeda; M Nakanishi; K Shimizu; K Ohbayashi
APPLIED OPTICS, 44, 5, 808-816, Feb. 2005, Peer-reviwed
Scientific journal, English

Second-order statistical property of partially developed speckle and its applications to speckle metrology
W Wang; SG Hanson; Y Miyamoto; M Takeda
2005 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, 840-841, 2005, Peer-reviwed
International conference proceedings, English

A simple technique for the direct full-field observation of 3-D coherence function with variable scale control
W Wang; ZH Duan; Y Miyamoto; M Takeda
2005 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, 898-899, 2005, Peer-reviwed
International conference proceedings, English

A novel interferometer for measuring the wavefront of multi-wavelength optical pickups
ZT Ge; T Saitou; M Kurose; M Takeda
2005 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, 1012-1013, 2005, Peer-reviwed
International conference proceedings, English

Phase-crossing algorithm for white-light fringe analysis
ME Pawlowski; Y Sakano; Y Miyamoto; M Takeda
2005 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, 1010-1011, 2005, Peer-reviwed
International conference proceedings, English

LCD-based low spatial coherence interferometer
Z Duan; P Pavlicek; Y Miyamoto; M Takeda
Holography, Diffractive Optics, and Applications II, Pts 1 and 2, 5636, 34-39, 2005, Peer-reviwed
International conference proceedings, English

Profile measurement of objects with discontinuous surfaces by modified temporal phase unwrapping
A Tian; T Makihata; M Takeda; ZD Jiang
Advanced Materials and Devices for Sensing and Imaging II, 5633, 23-30, 2005, Peer-reviwed
International conference proceedings, English

Multi-spectral phase-crossing white-light interferometry
M Pawlowski; Y Sakano; Y Miyamoto; M Takeda
Eighth International Symposium on Laser Metrology, 5776, 88-93, 2005, Peer-reviwed
International conference proceedings, English

Comparison of EUV interferometry methods in EUVA project
S Kato; C Ouchi; M Hasegawa; A Suzuki; T Hasegawa; K Sugisaki; M Okada; Z Yucong; K Murakami; J Saito; M Niibe; M Takeda
Emerging Lithographic Technologies IX, Pts 1 and 2, 5751, 110-117, 2005, Peer-reviwed
International conference proceedings, English

Phase distribution measurements of Laguerre-Gaussian beam with Fourier transform fringe analysis and polarization methods
Yoko Miyamoto; Takashi Yonemura; Atsushi Wada; Hiroyuki Ohminato; Mitsuo Takeda
Conference on Lasers and Electro-Optics Europe - Technical Digest, p.78, CH-10-TUE, 2005, Peer-reviwed
International conference proceedings, English

Deformation due to distorted hologram for generation of Laguerre Gaussian beam
Atsushi Wada; Hiroyuki Ohminato; Takashi Yonemura; Yoko Miyamoto; Mitsuo Takeda
Conference on Lasers and Electro-Optics Europe - Technical Digest, p.100 (CC-11-WED), 2005, Peer-reviwed
International conference proceedings, English

Experimental study of local properties of optical vortices in random isotropic field
Wang Wei; Steen G. Hanson; Yoko Miyamoto; Mitsuo Takeda
Conference on Lasers and Electro-Optics Europe - Technical Digest, p.124 (CH1-4-THU), 2005, Peer-reviwed
International conference proceedings, English

Spatial coherence interferometry using a sinusoidal spatial-frequency comb
Zhihui Duan; Pavel Pavelicek; Yoko Miyamoto; Mitsuo Takeda
Conference on Lasers and Electro-Optics Europe - Technical Digest, p.140 (CH4-1-FRI), 2005, Peer-reviwed
International conference proceedings, English

Second-order statistical property of partially developed speckle and its applications to speckle metrology
Wang Wei; Steen G. Hanson; Yoko Miyamoto; Mitsuo Takeda
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2005, 1423-1424, 2005, Peer-reviwed
International conference proceedings, English

Phase-crossing algorithm for white-light fringe analysis
Michal E. Pawlowski; Youhei Sakano; Yoko Miyamoto; Mitsuo Takeda
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2005, 1691-1692, 2005, Peer-reviwed
International conference proceedings, English

A novel interferometer for measuring the wavefront of multi-wavelength optical pickups
Zongtao Ge; Takayuki Saitou; Minoru Kurose; Mitsuo Takeda
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2005, 1693-1694, 2005, Peer-reviwed
International conference proceedings, English

3D common-path interferometer: Achromatic nulling of on-axial light
Alexander V. Tavrov; Yukitoshi Otani; Takashi Kurokawa; Mitsuo Takeda
Proceedings of SPIE - The International Society for Optical Engineering, 5905, 1-7, 2005, Peer-reviwed
International conference proceedings, English

Synthesis and spatial evolution of longitudinal coherence vortex
Wei Wang; Zhihui Duan; Steen G. Hanson; Yoko Miyamoto; Mitsuo Takeda
Proceedings of SPIE - The International Society for Optical Engineering, 5924, 1-7, 2005, Peer-reviwed
International conference proceedings, English

Comparisons between EUV at-wavelength metrological methods
Katsumi Sugisaki; Masashi Okada; Yucong Zhu; Katsura Otaki; Zhiqiang Liu; Jun Kawakami; Mikihiko Ishii; Jun Saito; Katsuhiko Murakami; Masanobu Hasegawa; Chidane Ouchi; Seima Kato; Takayuki Hasegawa; Akiyoshi Suzuki; Hideo Yokota; Masahito Niibe; Mitsuo Takeda
Proceedings of SPIE - The International Society for Optical Engineering, 5921, 1-8, 2005, Peer-reviwed
International conference proceedings, English

Phase distribution measurements of phase-singular beam with Fourier transform fringe analysis and polarization methods
Y. Miyamoto; T. Yonemura; A. Wada; H. Ohminato; M. Takeda
17th International Conference on Laser Spectroscopy (ICOLS 05), p. 181, 2005, Peer-reviwed
International conference proceedings, English

Effect of hologram distortion on detection and generation of orbital angular momentum modes
A. Wada; H. Ohminato; T. Yonemura; Y. Miyamoto; M. Takeda
IQEC, International Quantum Electronics Conference Proceedings, 2005, 1317-1318, 2005, Peer-reviwed
International conference proceedings, English

Verification of hologram position in experiment of entanglement in orbital angular momentum of photons
Daisuke Kawase; Atsushi Wada; Shigeki Takeuchi; Yoko Miyamoto; Keiji Sasaki; Mitsuo Takeda
IQEC, International Quantum Electronics Conference Proceedings, 2005, 1319-1320, 2005, Peer-reviwed
International conference proceedings, English

Achromatic pi-phase shift for nano-sensing interferometry: Nulling of polychromatic on-axial light, off-axial light detection
A Tavrov; T Kurokawa; M Takeda
2005 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, 895-897, 2005, Peer-reviwed
International conference proceedings, English

A novel profilometry using frequency comb light source
S Choi; M Yamamoto; D Moteki; T Shioda; Y Tanaka; M Takeda; T Kurokawa
2005 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, 1007-1009, 2005, Peer-reviwed
International conference proceedings, English

Application of cross-grating interferometry for EUV wavefront measurement
S. Kato; C. Ouchi; M. Hasegawa; A. Ohkubo; Y. Sekine; A. Suzuki; T. Hasegawa; Y. Tanaka; K. Murakami; J. Saito; M. Ishii; J. Kawakami; K. Sugisaki; M. Okada; Y. Zhu; K. Otaki; Z. Q. Liu; M. Niibe; M. Takeda
3rd International Extreme Ultraviolet Lithography Symposium, Technical Digest, MeP15, Nov. 2004, Peer-reviwed
International conference proceedings, English

Propagation analysis of Laguerre-Gaussian beam with astigmatism
A. Wada; H. Ohminato; T. Yonemura; Y. Miyamoto; M. Takeda
ICO International Conference, Optics and Photonics in Technology Frontier, Technical Digest, 63-64, Jul. 2004, Peer-reviwed
International conference proceedings, English

Density of phase singularities in analytic signal of speckle pattern with application to micro-displacement measurement
W. Wang; N. Ishii; S. G. Hanson; Y. Miyamoto; M. Takeda
ICO International Conference, Optics and Photonics in Technology Frontier, Technical Digest, 407-408, Jul. 2004
International conference proceedings, English

Pseudo-phase information of complex analytic signal of speckle fields and its applications: micro-displacement measurement based on phase-only correlation in signal domain
W Wang; N Ishii; Y Miyamoto; M Takeda
OPTICAL METROLOGY IN PRODUCTION ENGINEERING, 5457, 44-49, 2004, Peer-reviwed
International conference proceedings, English

Achromatic coronagraph based on out-of-plane common-path nulling interferometer
AV Tavrov; Y Tanaka; T Shioda; T Kurokawa; M Takeda
NEW FRONTIERS IN STELLAR INTERFEROMETRY, PTS 1-3, 5491, 824-830, 2004, Peer-reviwed
International conference proceedings, English

Spatio-spectral digital holography for full-field tomographic imaging with adaptive focusing
M Pawlowski; Y Sakano; Y Miyamoto; M Takeda; K Obayashi
INTERFEROMETRY XII: TECHNIQUES AND ANALYSIS, 5531, 121-126, 2004, Peer-reviwed
International conference proceedings, English

Statistical property of the complex analytic signal of white-light speckle pattern applied to micro-displacement measurement
W Wang; N Ishii; Y Miyamoto; M Takeda
INTERFEROMETRY XII: TECHNIQUES AND ANALYSIS, 5531, 146-152, 2004, Peer-reviwed
International conference proceedings, English

Double-source interferometry for reducing spurious noise fringes
ZQ Liu; T Gemma; S Udagawa; M Takeda
INTERFEROMETRY XII: TECHNIQUES AND ANALYSIS, 5531, 193-202, 2004, Peer-reviwed
International conference proceedings, English

An improved illumination system for spatial coherence control
ZQ Liu; T Gemma; J Rosen; M Takeda
INTERFEROMETRY XII: TECHNIQUES AND ANALYSIS, 5531, 220-227, 2004, Peer-reviwed
International conference proceedings, English

Synthetic spatial coherence function for optical tomography and profilometry: influence of the observation condition
Z Duan; H Kozaki; Y Miyamoto; J Rosen; M Takeda
INTERFEROMETRY XII: TECHNIQUES AND ANALYSIS, 5531, 236-243, 2004, Peer-reviwed
International conference proceedings, English

OFDR with an SSG-DBR laser
T Amano; H Hiro-Oka; DH Choi; H Furukawa; F Kano; M Takeda; M Nakanishi; K Shimizu; K Ohbayashi
INTERFEROMETRY XII: TECHNIQUES AND ANALYSIS, 5531, 375-382, 2004, Peer-reviwed
International conference proceedings, English

Recent progress of EUV wavefront metrology in EUVA
M Hasegawa; C Ouchi; T Hasegawa; S Kato; A Ohkubo; A Suzuki; K Sugisaki; M Okada; K Otaki; K Murakami; J Saito; M Niibe; M Takeda
ADVANCES IN MIRROR TECHNOLOGY FOR X-RAY, EUV LITHOGRAPHY, LASER, AND OTHER APPLICATIONS II, 5533, 27-36, 2004
International conference proceedings, English

High-resolution two-dimensional angle measurement technique based on fringe analysis
ZT Ge; M Takeda
APPLIED OPTICS, 42, 34, 6859-6868, Dec. 2003, Peer-reviwed
Scientific journal, English

Fourier transform spectral interferometric micro-profilometry for large step-height measurement with improved signal processing
D. S. Mehta; H. Hinosugi; S. Saito; M. Takeda; T. Kurokawa; H. Takahashi; M. Ando; M. Shishido; T. Yoshizawa
Proceedings of International Conference on Laser Applications and Optical Metrology, 586-591, Dec. 2003, Peer-reviwed
International conference proceedings, English

Three-dimensional sensing for shape recognition
D. Choudhury; M. Takeda
Proceedings of International Conference on Laser Applications and Optical Metrology, 280-284, Dec. 2003, Peer-reviwed
International conference proceedings, English

Conservation of orbital angular momentum in phase singular beams with astigmatism
Yoko Miyamoto; Atsushi Wada; Hiroyuki Ohminato; Mitsuo Takeda
16th International Conference on Laser Spectroscopy (ICOLS 03), 199, Jul. 2003, Peer-reviwed
International conference proceedings, English

Spatial coherence radar applied for tilted surface profilometry
M Gokhler; ZH Duan; J Rosen; M Takeda
OPTICAL ENGINEERING, 42, 3, 830-836, Mar. 2003, Peer-reviwed
Scientific journal, English

Spectral interference Mirau microscope with an acousto-optic tunable filter for three-dimensional surface profilometry
DS Mehta; S Saito; H Hinosugi; M Takeda; T Kurokawa
APPLIED OPTICS, 42, 7, 1296-1305, Mar. 2003, Peer-reviwed
Scientific journal, English

Profilometry based on two-photon absorption in a silicon avalanche photodiode
Y Tanaka; N Sako; T Kurokawa; H Tsuda; M Takeda
OPTICS LETTERS, 28, 6, 402-404, Mar. 2003, Peer-reviwed
Scientific journal, English

Spectral interferometric microscope with tandem liquid-crystal Fabry-Perot interferometers for extension of the dynamic range in three-dimensional step-height measurement
DS Mehta; H Hinosugi; S Saito; M Takeda; T Kurokawa; H Takahashi; M Ando; M Shishido; T Yoshizawa
APPLIED OPTICS, 42, 4, 682-690, Feb. 2003, Peer-reviwed
Scientific journal, English

Three-dimensional target recognition using the phase information from a Fourier transform profilometer
D Choudhury; M Takeda
OPTICAL INFORMATION SYSTEMS, 5202, 168-175, 2003, Peer-reviwed
International conference proceedings, English

Transformation of orbital angular momentum photon states under astigmatism
Y. Miyamoto; A. Wada; T. Ohtani; N. Nishihara; M. Takeda
The 8th International Symposium on Advanced Physical Fields: Advanced Materials for Quantum Computing (APF8), 46, Jan. 2003, Peer-reviwed
International conference proceedings, English

Phase singularities in dynamic speckle fields and their applications to optical metrology
W Wang; N Ishii; Y Miyamoto; M Takeda
SPECKLE METROLOGY 2003, PROCEEDINGS, 4933, 175-180, 2003, Peer-reviwed
International conference proceedings, English

Reconstruction of phase-shift digital holograms with unknown phase-shift by Fourier fringe analysis
A Wada; T Kurashima; Y Miyamoto; M Takeda
OPTICAL MEASUREMENT SYSTEMS FOR INDUSTRIAL INSPECTION III, 5144, 138-141, 2003, Peer-reviwed
International conference proceedings, English

Achromatic nulling interferometer based on a geometric spin-redirection phase
A Tavrov; R Bohr; M Totzeck; H Tiziani; M Takeda
OPTICS LETTERS, 27, 23, 2070-2072, Dec. 2002, Peer-reviwed
Scientific journal, English

Three-dimensional target recognition by profilometric phase coding
D. Choudhury; M. Takeda
Optics and Photonics News (OSA), 13, 12, 47, Dec. 2002, Peer-reviwed
Scientific journal, English

Holographic generation of Laguerre-Gaussian beam with astigmatic illumination beam
A. Wada; Y. Miyamoto; T. Ohtani; N. Nishihara; M. Takeda
Proc. 3rd International Conference on Optics-photonics Design and Fabrication, ODF2002, 123-124, Nov. 2002, Peer-reviwed
International conference proceedings, English

Spatial coherence optical tomography and profilometry: A new principle for dispersion-free measurement
Z.-H. Duan; M. Gokhler; J. Rosen; H. Kozaki; N. Ishii; M. Takeda
Proceedings of Asian Symposium on Biomedical Optics and Photomedicine, BOPM2002, 138-139, Oct. 2002, Peer-reviwed
International conference proceedings, English

Absolute 3-D sensor with single fringe-pattern recording
Y. Kasai; Y. Miyamoto; M. Takeda; H. Tanaka; R. Gu
Proc. SPIE, 7th International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, 4900, 173-177, Sep. 2002, Peer-reviwed
International conference proceedings, English

Frequency-multiplexed profilometric phase coding for three-dimensional object recognition without 2 mu phase ambiguity
D Choudhury; M Takeda
OPTICS LETTERS, 27, 16, 1466-1468, Aug. 2002, Peer-reviwed
Scientific journal, English

Simultaneous three-dimensional step-height measurement and high-resolution tomographic imaging with a spectral interferometric microscope
DS Mehta; M Sugai; H Hinosugi; S Saito; M Takeda; T Kurokawa; H Takahashi; M Ando; M Shishido; T Yoshizawa
APPLIED OPTICS, 41, 19, 3874-3885, Jul. 2002, Peer-reviwed
Scientific journal, English

Generation of femtosecond laser pulse with phase singularity
Y. Miyamoto; N. R. Heckenberg; H. Rubinsztein-Dunlop; A. Wada; T. Ohtani; N. Nishihara; M. Takeda
International Quantum Electronics Conference 2002, 59, Jun. 2002, Peer-reviwed
International conference proceedings, English

Synthesis of longitudinal coherence functions by spatial modulation of an extended light source: a new interpretation and experimental verifications
W Wang; H Kozaki; J Rosen; M Takeda
APPLIED OPTICS, 41, 10, 1962-1971, Apr. 2002, Peer-reviwed
Scientific journal, English

Three-dimensional step-height measurement using Mirau-type spectral interference microscope with acousto-optic tunable filter as frequency scanning device
DS Mehta; S Saito; H Hinosugi; M Takeda; T Kurokawa
INTERFEROMETRY XI: TECHNIQUES AND ANALYSIS, 4777, 184-193, 2002, Peer-reviwed
International conference proceedings, English

Reflectometry based on two-photon absorption of a silicon avalanche photodiode
Y Tanaka; PG Chua; T Kurokawa; H Tsuda; M Naganuma; M Takeda
OFS 2002: 15TH OPTICAL FIBER SENSORS CONFERENCE TECHNICAL DIGEST, 577-580, 2002, Peer-reviwed
International conference proceedings, English

Effects of astigmatic aberration in holographic generation of Laguerre-Gaussian beam
A Wada; Y Miyamoto; T Ohtani; N Nishihara; M Takeda
ADVANCED LASERS AND SYSTEMS, 5137, 177-180, 2002, Peer-reviwed
International conference proceedings, English

Synthetic spatial coherence function for optical tomography and profilometry: simultaneous realization of longitudinal coherence scan and phase shift
ZH Duan; M Gokhler; J Rosen; H Kozaki; N Ishii; M Takeda
INTERFEROMETRY XI: TECHNIQUES AND ANALYSIS, 4777, 110-117, 2002, Peer-reviwed
International conference proceedings, English

Multiple-wavelength optical vortices
Y. Miyamoto; A. Wada; T. Ohtani; N. Nishihara; M. Takeda; H. Rubinsztein-Dunlop; N. R. Heckenberg
Proc. Australasian Conference on Optics, Lasers and Spectroscopy 2001, (Brisbane, Australia), 51, Dec. 2001, Peer-reviwed
International conference proceedings, English

Propagation characteristics of laser beam with phase singularity under presence of astigmatism
Y. Miyamoto; A. Wada; T. Ohtani; N. Nishihara; M. Takeda
Multi-dimensional Microscopy 2001, the 3rd Asia-Pacific Symposium on Confocal Microscopy and Related Technologies, (Melbourne, Australia), 52, Nov. 2001, Peer-reviwed
International conference proceedings, English

Three-dimensional shape measurement and tomographic imaging of discontinuous objects using spectral interferometric technique with improved resolution
D. S. Mehta; M. Sugai; H. Hinosugi; S. Saito; M. Takeda; T. Kurokawa; H. Takahashi; M. Ando; M. Shishido; Y. Yoshizawa
Fringe 2001, Proceedings of the 4th International Workshop on Automatic Processing of Fringe Patterns (Bremen, Germany), 341-343, Sep. 2001, Peer-reviwed
International conference proceedings, English

"Evolution of Optical Vortices and Phase Singularities in Scattered Random Fields: -Experimental Observation of Their 3-D Structures-"
T. Sotomaru; H. Tsuchiya; Y. Miyamoto; M. Takeda
International Balatonfuered Workshop on New Prospectives for Optical Metrology, HoloMet 2001 (Baratonfuered, Hungary, June 2001), 75-81, Jun. 2001
International conference proceedings, English

Coordinate-transform technique for closed-fringe analysis by the Fourier-transform method
ZT Ge; F Kobayashi; S Matsuda; M Takeda
APPLIED OPTICS, 40, 10, 1649-1657, Apr. 2001, Peer-reviwed
Scientific journal, English

Self-reference method for phase-shift interferometry
ZT Ge; M Takeda
OPTICAL ENGINEERING FOR SENSING AND NANOTECHNOLOGY (ICOSN 2001), 4416, 152-157, 2001
International conference proceedings, English

Effects of astigmatic aberration in holographic generation of Laguerre-Gaussian beam.
A Wada; Y Miyamoto; T Ohtani; N Nishihara; M Takeda
OPTICAL ENGINEERING FOR SENSING AND NANOTECHNOLOGY (ICOSN 2001), 4416, 376-379, 2001, Peer-reviwed
International conference proceedings, English

Spectral interferometric technique for 3D-shape measurement of microscopic objects with improved resolution, speed of measurement and signal processing
DS Mehta; M Sugai; H Hinosugi; S Saito; M Takeda; T Kurokawa; H Takahashi; M Ando; M Shishido; T Yoshizawa
CLEO(R)/PACIFIC RIM 2001, VOL I, TECHNICAL DIGEST, I, 472-473, 2001, Peer-reviwed
International conference proceedings, English

Infra-red image detection with a Si-CCD image sensor due to the two-photon absorption process
PG Chua; Y Tanaka; M Takeda; T Kurokawa
CLEO(R)/PACIFIC RIM 2001, VOL I, TECHNICAL DIGEST, I, 482-483, 2001, Peer-reviwed
International conference proceedings, English

High precision 2-D angle measurement using fringe analysis techniques
ZT Ge; T Saito; S Matsuda; M Takeda
OPTICAL MANUFACTURING AND TESTING IV, 4451, 448-457, 2001, Peer-reviwed
International conference proceedings, English

New principle for optical tomography and profilometry based on spatial coherence synthesis with a spatially modulated extended light source
W Wang; H Kozaki; J Rosen; M Takeda
ADVANCED PHOTONIC SENSORS AND APPLICATIONS II, 4596, 54-65, 2001, Peer-reviwed
International conference proceedings, English

Holographic generation of Laguerre-Gaussian beam: effect of illumination beam properties
A. Wada; Y. Miyamoto; T. Ohtani; M. Masuda; M. Takeda
Proc. 2nd International Conference on Optical Design and Fabrication, ODF2000,（Tokyo, Japan）, 181-184, Nov. 2000, Peer-reviwed
International conference proceedings, English

Holographic generation of laser beam with phase singularity
Y. Miyamoto; A. Wada; T. Ohtani; M. Masuda; M. Takeda
2000 Conference on Lasers and Electro-Optics Europe, 88, Sep. 2000, Peer-reviwed
International conference proceedings, English

Longitudinal spatial coherence applied for surface profilometry
J Rosen; M Takeda
APPLIED OPTICS, 39, 23, 4107-4111, Aug. 2000, Peer-reviwed
Scientific journal, English

Interferometric microimaging based on geometrical spin-redirection phase
AV Tavrov; Y Miyamoto; T Kawabata; M Takeda; VA Andreev
OPTICS LETTERS, 25, 7, 460-462, Apr. 2000, Peer-reviwed
Scientific journal, English

Imaging with Berry phase in polarization interferometer with geometric shear
A. V. Tavrov; Y. Miyamoto; T. Kawabata; M. Takeda; V. A. Andreev
FOM 2000, International Workshop on Focus on Microscopy（Shirahama, Japan）, 44, Apr. 2000, Peer-reviwed
International conference proceedings, English

Absolute three-dimensional shape measurements using coaxial and coimage plane optical systems and Fourier fringe analysis for focus detection
M Takeda; T Aoki; Y Miyamoto; H Tanaka; RW Gu; ZB Zhang
OPTICAL ENGINEERING, 39, 1, 61-68, Jan. 2000, Peer-reviwed
Scientific journal, English

Generalized algorithm for the unified analysis and simultaneous evaluation of geometrical spin-redirection phase and Pancharatnam phase in a complex interferometric system
AV Tavrov; Y Miyamoto; T Kawabata; M Takeda; VA Andreev
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 17, 1, 154-161, Jan. 2000, Peer-reviwed
Scientific journal, English

Visualisation of Berry spin-redirection phase in polarization interferometer with geometric shear
AV Tavrov; Y Miyamoto; T Kawabata; M Takeda; VA Andreev
LASER INTERFEROMETRY X: TECHNIQUES AND ANALYSIS AND APPLICATIONS, PTS A AND B, 4101, 12-20, 2000
International conference proceedings, English

Coordinate transform method for closed fringe analysis
ZT Ge; F Kobayashi; S Matsuda; M Takeda
LASER INTERFEROMETRY X: TECHNIQUES AND ANALYSIS AND APPLICATIONS, PTS A AND B, 4101, 38-46, 2000, Peer-reviwed
International conference proceedings, English

Optical frequency-domain imaging microprofilometry with a frequency-tunable liquid-crystal Fabry-Perot etalon device
N Kinoshita; M Takeda; H Yago; Y Watanabe; T Kurokawa
APPLIED OPTICS, 38, 34, 7063-7068, Dec. 1999, Peer-reviwed
Scientific journal, English

Method to evaluate the geometrical spin-redirection phase for a nonplanar ray
AV Tavrov; T Kawabata; Y Miyamoto; M Takeda; VV Andreev
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 16, 4, 919-921, Apr. 1999, Peer-reviwed
Scientific journal, English

Method to evaluate the geometrical spin-redirection phase for a nonplanar ray
Alexander V. Tavrov; Tsutomu Kawabata; Yoko Miyamoto; Mitsuo Takeda; Vladimir V. Andreev
Journal of the Optical Society of America A: Optics and Image Science, and Vision, 16, 4, 919-921, 1999
Scientific journal, English

Photonic sensing and metrology using novel liquid crystal devices
M Takeda; T Kurokawa
SELECTED PAPER FROM INTERNATIONAL CONFERENCE ON OPTICS AND OPTOELECTRONICS '98, 3729, 415-425, 1999, Peer-reviwed
International conference proceedings, English

Electron-beam lithography fabrication of phase holograms to generate Laguerre-Gaussian beams
Y Miyamoto; M Masuda; A Wada; M Takeda
OPTICAL ENGINEERING FOR SENSING AND NANOTECHNOLOGY (ICOSN'99), 3740, 232-235, 1999, Peer-reviwed
International conference proceedings, English

3-D shape measurement using a coaxial and coimage-plane fringe projection and observation system
M Takeda; T Aoki; Y Miyamoto; H Tanaka; RW Gu; ZB Zhang
INTERFEROMETRY '99: TECHNIQUES AND TECHNOLOGIES, 3744, 126-135, 1999, Peer-reviwed
International conference proceedings, English

Efficient algorithm for the evaluation of geometric shift of polarization in interferometric and polarimetric systems
AV Tavrov; Y Miyamoto; T Kawabata; M Takeda; VV Andreev
INTERFEROMETRY '99: TECHNIQUES AND TECHNOLOGIES, 3744, 347-357, 1999, Peer-reviwed
International conference proceedings, English

Real-time holographic vibrometry with a ferroelectric liquid-crystal spatial light modulator
M. Sano; M. Takeda; S. Fukushima; T. Kurokawa
Appl. Opt., 37, 32, 32, Dec. 1998
Scientific journal, English

Two-dimensional phase unwrapping by direct elimination of rotational vector fields from phase gradients obtained by heterodyne technigues
T. Aoki; T. Sotomaru; Y. Miyamoto; M. Takeda
Laser Interferometry IX : Techniques and Analysis, Proc. SPIE, 3478, 162-168, Jul. 1998, Peer-reviwed
International conference proceedings, English

Implementation of geometrical spin-redirection phase in inter ferometric measurements
A. V. Tavrov; M. Takeda; Y. Miyamoto; T.Kawabata; V. V. Andree
Conference on Laser Optics 98, Paper N. 1112 22-26, Jun. 1998, Peer-reviwed
International conference proceedings, English

Two-dimensional phase unwrapping by direct elimination of rotational vector fields from phase gradients obtained by heterodyne techniques
Takahiro Aoki; Toshihiro Sotomaru; Takeshi Ozawa; Takashi Komiyama; Yoko Miyamoto; Mitsuo Takeda
Optical Review, Optical Society of Japan, 5, 6, 374-379, 1998, Peer-reviwed
Scientific journal, English

Frequency-multiplex Fourier-transform profilometry: A single-shot three-dimensional shape measurement of objects with large height discontinuities and/or surface isolations
M Takeda; Q Gu; M Kinoshita; H Takai; Y Takahashi
APPLIED OPTICS, 36, 22, 5347-5354, Aug. 1997, Peer-reviwed
Scientific journal, English

Phase unwrapping by a maximum cross-amplitude spanning tree algorithm: A comparative study
M Takeda; T Abe
OPTICAL ENGINEERING, 35, 8, 2345-2351, Aug. 1996, Peer-reviwed
Scientific journal, English

Diffraction efficiency of a grating coupler for an array illuminator
T Nakaya; Y Katoh; T Kubota; M Takeda
APPLIED OPTICS, 35, 20, 3891-3898, Jul. 1996, Peer-reviwed
Scientific journal, English

Crystallographic heterodyne phase detection for highly sensitive lattice-distortion measurements
M Takeda; J Suzuki
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 13, 7, 1495-1500, Jul. 1996, Peer-reviwed
Scientific journal, English

Rice probability functions for level-crossing intervals of speckle intensity fields
N Youssef; T Munakata; M Takeda
OPTICS COMMUNICATIONS, 123, 1-3, 55-62, Jan. 1996, Peer-reviwed
Scientific journal, English

GENERATION OF A VIRTUAL WAVE-FRONT BY SPACE-TIME DEGENERACY IN A SCAN-SYNCHRONIZED WAVELENGTH-SHIFT INTERFEROMETER
M TAKEDA; JI HASE
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 12, 12, 2686-2692, Dec. 1995, Peer-reviwed
Scientific journal, English

FOURIER-TRANSFORM SPECKLE PROFILOMETRY - 3-DIMENSIONAL SHAPE MEASUREMENTS OF DIFFUSE OBJECTS WITH LARGE HEIGHT STEPS AND/OR SPATIALLY ISOLATED SURFACES
M TAKEDA; H YAMAMOTO
APPLIED OPTICS, 33, 34, 7829-7837, Dec. 1994, Peer-reviwed
Scientific journal, English

STACK-TYPE OPTICAL BUSLINES BASED ON A MODIFIED DRAGONE STAR COUPLER - A CONCEPT
M TAKEDA
OPTOELECTRONICS-DEVICES AND TECHNOLOGIES, 9, 1, 137-142, Mar. 1994, Peer-reviwed
Scientific journal, English

COMPLEX NEURAL FIELDS WITH A HOPFIELD-LIKE ENERGY FUNCTION AND AN ANALOGY TO OPTICAL-FIELDS GENERATED IN PHASE-CONJUGATE RESONATORS
M TAKEDA; T KISHIGAMI
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 9, 12, 2182-2191, Dec. 1992, Peer-reviwed
Scientific journal, English

SPATIOTEMPORAL FREQUENCY MULTIPLEX HETERODYNE INTERFEROMETRY
M TAKEDA; M KITOH
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 9, 9, 1607-1614, Sep. 1992, Peer-reviwed
Scientific journal, English

WAVELENGTH-SHIFT INTERFEROMETRY FOR DISTANCE MEASUREMENTS USING THE FOURIER-TRANSFORM TECHNIQUE FOR FRINGE ANALYSIS
M SUEMATSU; M TAKEDA
APPLIED OPTICS, 30, 28, 4046-4055, Oct. 1991, Peer-reviwed
Scientific journal, English

INTEGRATED OPTIC ARRAY ILLUMINATOR - A DESIGN FOR EFFICIENT AND UNIFORM POWER DISTRIBUTION
M TAKEDA; T KUBOTA
APPLIED OPTICS, 30, 9, 1090-1095, Mar. 1991, Peer-reviwed
Scientific journal, English

Spatial-carrier fringe-pattern analysis and its applications to precision interferometry and profilometry: An overview
Mitsuo Takeda
Industrial Metrology, 1, 2, 79-99, 1990, Peer-reviwed
Scientific journal, English

ARRAY ILLUMINATOR USING GRATING COUPLERS
T KUBOTA; M TAKEDA
OPTICS LETTERS, 14, 12, 651-652, Jun. 1989, Peer-reviwed
Scientific journal, English

PHASE RETRIEVAL BASED ON THE IRRADIANCE TRANSPORT-EQUATION AND THE FOURIER-TRANSFORM METHOD - EXPERIMENTS
K ICHIKAWA; AW LOHMANN; M TAKEDA
APPLIED OPTICS, 27, 16, 3433-3436, Aug. 1988, Peer-reviwed
Scientific journal, English

NEURAL NETWORKS FOR COMPUTATION - NUMBER REPRESENTATIONS AND PROGRAMMING COMPLEXITY
M TAKEDA; JW GOODMAN
APPLIED OPTICS, 25, 18, 3033-3046, Sep. 1986, Peer-reviwed
Scientific journal, English

SUBFRINGE HOLOGRAPHIC-INTERFEROMETRY BY COMPUTER-BASED SPATIAL-CARRIER FRINGE-PATTERN ANALYSIS
M TAKEDA; Z TUNG
JOURNAL OF OPTICS-NOUVELLE REVUE D OPTIQUE, 16, 3, 127-131, 1985, Peer-reviwed
Scientific journal, English

COMPUTER-BASED HIGHLY SENSITIVE ELECTRON-WAVE INTERFEROMETRY
M TAKEDA; QS RU
APPLIED OPTICS, 24, 18, 3068-3071, 1985, Peer-reviwed
Scientific journal, English

LATERAL ABERRATION MEASUREMENTS WITH A DIGITAL TALBOT INTERFEROMETER
M TAKEDA; S KOBAYASHI
APPLIED OPTICS, 23, 11, 1760-1764, 1984, Peer-reviwed
Scientific journal, English

Optical design for three-mirror 120-inch telescopes and their prime focus corrector
H. W. Epps; M. Takeda
Kogaku, 応用物理学会分科会日本光学会, 13, 5, 400-409, 1984, Peer-reviwed
Scientific journal, Japanese

Optimization and practical designs for three-mirror telescopes
H. W. Epps; M. Takeda
Annals of the Tokyo Astronomical Observatory, 19, 3, 401-412, 1983, Peer-reviwed
Research institution, English

FOURIER-TRANSFORM PROFILOMETRY FOR THE AUTOMATIC-MEASUREMENT OF 3-D OBJECT SHAPES
M TAKEDA; K MUTOH
APPLIED OPTICS, 22, 24, 3977-3982, 1983, Peer-reviwed
Scientific journal, English

FOURIER-TRANSFORM METHOD OF FRINGE-PATTERN ANALYSIS FOR COMPUTER-BASED TOPOGRAPHY AND INTERFEROMETRY
M TAKEDA; H INA; S KOBAYASHI
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 72, 1, 156-160, 1982, Peer-reviwed
Scientific journal, English

FRINGE FORMULA FOR PROJECTION TYPE MOIRE TOPOGRAPHY
M TAKEDA
OPTICS AND LASERS IN ENGINEERING, 3, 1, 45-52, 1982, Peer-reviwed
Scientific journal, English

MOIRE STEREOMICROSCOPE
M TAKEDA; H INA
JOURNAL OF OPTICS-NOUVELLE REVUE D OPTIQUE, 13, 6, 339-343, 1982, Peer-reviwed
Scientific journal, English

CHROMATIC ABERRATION MATCHING OF THE POLYCHROMATIC OPTICAL TRANSFER-FUNCTION
M TAKEDA
APPLIED OPTICS, 20, 4, 684-687, 1981, Peer-reviwed
Scientific journal, English

NEW DIAGRAM FOR NOMOGRAPHIC DESIGN AND ANALYSIS OF PARAXIAL OPTICAL-SYSTEMS
M TAKEDA
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 70, 2, 236-242, 1980, Peer-reviwed
Scientific journal, English

MTF measurement of TV zoom lenses ; Influence of distortion on the equivalence of normal and inverse conjugate techniques
M. Takeda; K. Takesi
Appl. Opt., 17, 14, 2171-2175, Jul. 1978, Peer-reviwed
Scientific journal, English

Transmittance of a Gaussian beam through a Fabry-Perot etalon : Angular spectrum analysis and Experiments
芳野俊彦; 武田光夫
Kogaku, 6, 3, 113-119, Jun. 1977, Peer-reviwed
Scientific journal, Japanese

Influence of noise on the measurement of optical transfer functions by the digital Fourier transform method
M. Takeda; T. Ose
J. Opt. Soc. Am., 65, 5, 502-508, May 1975, Peer-reviwed
Scientific journal, English

Effect of phase nonlinearity in kinoform
T. Yatagai; M. Takeda
OPTIK, Zeitschrift fuer Licht-und Elekronenoptik, 43, 4, 337-352, Apr. 1975, Peer-reviwed
Scientific journal, English

Statistical error analysis of optical transfer functions obtained by the digital Fourier transform method
M. Takeda; T. Ose
Rept. of Institute of Industrial Science, Univ. of Tokyo, 24, 7, 289-317, 1975
Research institution, English

Efficient algorithm for OTF calculation by double transform method
武田光夫; 小瀬輝次
Kogaku, 3, 6, 373-382, Dec. 1974, Peer-reviwed
Scientific journal, Japanese

Effect of truncation of noisy line spread function on the computed optical transfer function
M. Takeda; T. Ose
Optica Acta, 21, 6, 477-487, Jun. 1974, Peer-reviwed
Scientific journal, English

Papers of Dr. Dinesh N. NAIK
TAKEDA Mitsuo
10 May 2013, 光学, 42, 5, 267-267, Japanese, 0389-6625, 10031166453, AN00080324

コヒーレンスホログラフィ：3次元空間コヒーレンス場の生成と制御
武田 光夫
Jan. 2013, 応用物理, 82, 1, 46-50, Japanese, Invited, Introduction scientific journal

先進的干渉計測技術の展望―計算光学とモデル同定干渉計測―
武田 光夫
光学工業技術協会, Jan. 2013, 光技術コンタクト, 51, 1, 21-28, Japanese, Invited, Introduction other, 0913-7289, 40019550820, AN10075091

19pAK-6 Detection of orbital angular momentum entangled photon states by hologram shifting method
Miyamoto Yoko; Ozaki Yusuke; Takeuchi Shigeki; Takeda Mitsuo; Sasaki Keiji
The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67, 2, 153-153, Japanese, 1342-8349, 110009601847, AA11439205

Thoughts on the 60th Anniversary of the Optical Society of Japan, JSAP
TAKEDA Mitsuo
10 Apr. 2012, 光学, 41, 4, 182-182, Japanese, 0389-6625, 10030511954, AN00080324

Commemoration of the Founding of the Takano Eiichi Optical Science Funds
TAKEDA Mitsuo
10 Mar. 2012, 光学, 41, 3, 158-159, Japanese, 0389-6625, 10030157480, AN00080324

空間光変調器を用いた干渉計の安定化 II
鳥生太雅; 宮本洋子; 武田光夫; 和田篤
08 Nov. 2010, Optics & Photonics Japan講演予稿集, 2010, 624-625, Japanese, 201102247711059771

Fueki Ryuko : Tradition and New Reform of the Optical Society of Japan
TAKEDA Mitsuo
10 May 2010, 光学, 39, 5, 217-217, Japanese, 0389-6625, 10026198449, AN00080324

白色干渉計測概論 －古くて新しい技術への一つの視点ー
武田 光夫
Mar. 2010, 光アライアンス, 3, Japanese, Invited, Introduction other

グラフィックプロセッサとマルチコアプロセッサの併用によるリアルタイム3次元形状計測
宮本洋子; 和田篤; 飯塚拓郎; 鈴木智也; 中山智章; 青木俊介; 尾崎雄亮; 鳥生太雅; 西野哲朗; 武田光夫
24 Nov. 2009, Optics & Photonics Japan講演予稿集, 2009, 528-529-529, Japanese, 201002236319180202

25aZF-11 Unneeded azimuthal components in detection of orbital angular momentum superposition states II
Miyamoto Yoko; Aoki Shunsuke; Takeuchi Shigeki; Takeda Mitsuo; Sasaki keiji
The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64, 2, 57-57, Japanese, 1342-8349, 110007496168, AA11439205

ホログラムの歪みの補正による異方性の少ないラゲールガウスビームの発生 III
尾崎雄亮; 和田篤; 尾藤浩一; 宮本洋子; 武田光夫
04 Nov. 2008, Optics & Photonics Japan講演予稿集, 2008, 140-141-141, Japanese, 200902234502030763

"Optical Metrology" and "Control of Light" ; "Visible Technology" and "Invisible Technology"
TAKEDA Mitsuo
10 Oct. 2008, 光学, 37, 10, 563-563, Japanese, 0389-6625, 10024339561, AN00080324

22aZA-6 Unneeded azimuthal components in detection of orbital angular momentum superposition states
Miyamoto Yoko; Aoki Shunsuke; Kawase Daisuke; Takeuchi Shigeki; Takeda Mitsuo; Sasaki Keiji
The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63, 2, 124-124, Japanese, 1342-8349, 110006982844, AA11439205

Achromatic interfero-coronagraph with two common-path interferometers in tandem
A. V. Tavrov; J. Nishikawa; M. Tamura; L. Abe; K. Yokochi; T. Kurokawa; M. Takeda; “”; Sep
2008, Applied Optics, 47, 27, 4915, 0003-6935, 80019808785, 18806852

Virtual wavefront compensation and speckle reduction in coronagraph by unbalanced nulling interferometer (UNI) and phase and amplitude correction (PAC)
J. Nishikawa; K. Yokochi; L. Abe; N. Murakami; T. Kotani; M. Tamura; T. Kurokawa; A.V. Tavrov; M. Takeda
2008, Proc. SPIE, Vol. 7010, 70102A

光渦応用計測：ランダム光渦場の位相特異点を用いた新センシング 技術
武田 光夫
日本オプトメカトロニクス協会, 2008, 光技術コンタクト, 46, 6, 253-257, Japanese, Invited, Introduction other, 0913-7289, 40016120833, AN10075091

Detection of orbital angular momentum superposition photon states using hologram and path interferometer
Yoko Miyamoto; Mitsuo Takeda; Daisuke Kawase; Shigeki Takeuchi; Shigeki Takeuchi; Keiji Sasaki; Atsushi Wada
Dec. 2007, Conference on Lasers and Electro-Optics Europe - Technical Digest, Peer-reviwed, 51249094462

23pRH-15 Influence of unneeded azimuthal modes in detection of superposition state of orbital angular momentum
Kawase Daisuke; Takeuchi Shigeki; Aoki Shunsuke; Miyamoto Yoko; Sasaki Keiji; Takeda Mitsuo
The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62, 2, 193-193, Japanese, 1342-8349, 110007143326, AA11439205

Common-path achromatic interferometer-coronagragh: images from a breadboard demonstrator
A. Tavrov; J. Nishikawa; M. Tamaru; L. Abe; K. Yokochi; T. Kurokawa; M. Takeda
2007, Appl. Opt., 46, 28, 6885-6895, 0003-6935, 80018125009, 17906715

ホログラムの歪みの補正による異方性の少ないラゲールガウスビームの発生
尾藤浩一; 和田篤; 米村高志; 青木俊介; 五十嵐早苗; 宮本洋子; 武田光夫
08 Nov. 2006, 日本光学会講演要旨集, 2006, 328-329-329, Japanese, 200902281975862985

26aRB-12 Experimental verification of entanglement in LG modes using path interferometer
Kawase Daisuke; Takeuchi Shigeki; Sasaki Keiji; Wada Atsushi; Miyamoto Yoko; Takeda Mitsuo
The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61, 2, 119-119, Japanese, 1342-8349, 110007178548, AA11439205

26aRB-13 Detection of photon orbital angular momentum superposition states
Miyamoto Yoko; Kawase Daisuke; Takeuchi Shigeki; Wada Atsushi; Takeda Mitsuo; Sasaki Keiji
社団法人日本物理学会, 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61, 2, 120-120, Japanese, 1342-8349, 110007183119, AA11439205

Determining the optical axes of entangled Laguerre Gauss modes
Daisuke Kawase; Shigeki Takeuchi; Keiji Sasaki; Atsushi Wada; Yoko Miyamoto; Mitsuo Takeda
A method for determining the positions of hologram dislocations relative to

the optical axes of entangled Laguerre Gaussian modes is proposed. In our

method, the coincidence count rate distribution was obtained by scanning the

position of one of the holograms in two dimensions. Then, the relative position

of the hologram dislocation was determined quantitatively from the positions of

the minimum and maximum coincidence count rates. The validity of the method was

experimentally verified, and in addition, an experiment demonstrating the

violation of the Clauser-Horne-Shimony-Holt inequality w..., Feb. 2006, Peer-reviwed, Lecture materials

20pWA-5 Phase distribution measurement of Laguerre-Gaussian beam utilizing polarization
Miyamoto Y; Yonemura T; Wada A; Ohminato H; Takeda M
社団法人日本物理学会, 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60, 2, 66-66, Japanese, 1342-8349, 110004537714, AA11439205

プリズム角度と面形状の高精度測定：干渉角度計とその応用
葛宗濤; 齋藤隆行; 大井重徳; 武田光夫
Aug. 2005, 光アライアンス, 16, 5, 49-51, Japanese, Introduction other

27pYE-1 Experimental Study of Statistics of Phase Singularities in Random Light Waves
Wang Wei; Hanson Steen. G.; Miyamoto Yoko; Takeda Mitsuo
The Physical Society of Japan (JPS), 04 Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60, 1, 185-185, English, 1342-8349, 110004534854, AA11439205

Recent developments in spectral interference microscopes (invited)
M. Takeda; D. S. Mehta; M. E. Pawlowski; T. Kurokawa
2005, Eighth International Symposium on Laser Metrology, Proc. of SPIE, Vol. 5776, 22-28

15aTG-12 Verification of measurement basis in entanglement experiments of orbital angular momentum of photons
Kawase Daisuke; Tsujino Kenji; Takeuchi Shigeki; Sasaki Keiji; Wada Atsushi; Ohminato Hiroyuki; Miyamoto Yoko; Takeda Mitsuo
社団法人日本物理学会, 25 Aug. 2004, Meeting abstracts of the Physical Society of Japan, 59, 2, 136-136, Japanese, 1342-8349, 110002051329, AA11439205

30aXG-9 Detection mode analysis for holographic measurement of optical orbital angular momentum
Wada Atushi; Ohminato Hiroyuki; Yonemura Takashi; Miyamoto Yoko; Takeda Mitsuo
社団法人日本物理学会, 03 Mar. 2004, Meeting abstracts of the Physical Society of Japan, 59, 1, 193-193, Japanese, 1342-8349, 110002186707, AA11439205

Reversal of phase singularity and conservation of orbital angular momentum of optical beam with astigmatism
Wada Atushi; Ohminato Hiroyuki; Miyamoto Yoko; Takeda Mitsuo
社団法人日本物理学会, 15 Aug. 2003, Meeting abstracts of the Physical Society of Japan, 58, 2, 123-123, Japanese, 1342-8349, 110002059140, AA11439205

Spectral Interference Mirau Microscope with an Acousto-Optic Tunable Filter for Three-Dimensional Surface Profilometry
共著者; D. S. Mehta; S. Saito; H. Hinosugi; M. Takeda; T. Kurokawa
2003, Applied Optics-OT,, 42, 7, 1296-1305, 0003-6935, 80015804006, 12638886

Spectral Interferometric Microscope with Tandem Liquid-Crystal Fabry-Perot Interferometers for Extension of the Dynamic Range in Three-Dimensional Step-Height Measurement
共著者; D. S. Mehta; H. Hinosugi; S. Saito; M. Takeda; T. Kurokawa; H. Takahashi; M. Ando; M. Shishido; T. Yoshizawa
2003, Applied Optics-OT, 42, 4, 682-690, 0003-6935, 80015748543, 12564487

Frequency-multiplexed profilometric phase coding for three-dimensional object recognition without 2 pi phase ambiguity (vol 27, pg 1466, 2002)
D Choudhury; M Takeda
Oct. 2002, OPTICS LETTERS, 27, 20, 1851-1851, English, Others, 0146-9592, WOS:000178561300035

Education of Optics and Photonics at Universities
TAKEDA Mitsuo
10 Apr. 2002, 光学, 31, 4, 335-336, Japanese, 0389-6625, 10012333986, AN00080324

ホログラムを用いたラゲールガウスビームの発生
和田篤; 大谷巧; 西原昇; 宮本洋子; 武田光夫
21 Jun. 2001, 光学シンポジウム講演予稿集, 26th, 37-38-38, Japanese, 200902122446402587

Variable Wavelength Interferometer Using Liquid Crystals
KUROKAWA Takashi; TAKEDA Mitsuo
10 Jan. 2001, 光学, 30, 1, 27-28, Japanese, 0389-6625, 10012331325, AN00080324

Generation of Laguerre Gaussian beam by phase hologram III
Miyamoto Y; Wada A; Ohtani T; Masuda M; Takeda M
社団法人日本物理学会, 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55, 2, 99-99, Japanese, 1342-8349, 110002187619, AA11439205

24pA-1 Generation of Laguerre Gaussian beam by phase hologram II
Miyamoto Y; Masuda M; Wada A; Takeda M
社団法人日本物理学会, 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54, 2, 94-94, Japanese, 1342-8349, 110001992685, AA11439205

Multi-dimensional Digital Signal Processing for Three-dimensional Shape Measurements of Objects with Large Height Discontinuities : Temporal Frequency Scan vs. Spatial Frequency Scan
TAKEDA Mitsuo
03 Jun. 1999, 光波センシング技術研究会講演論文集 = Proceedings of ... Meeting on Lightwave Sensing Technology, 23, 9-16, Japanese, 10015810489, AN10547747

光コンピューティング，その多様性と体系化（巻頭言）
武田光夫
Jan. 1999, 光学, 28, 1, 1, Japanese, Introduction other

Generation of Laguerre-Gaussian Beam by Phase Hologram
MASUDA M.; MIYAMOTO Y.; TAKEDA M.
The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53, 2, 334-334, Japanese, 1342-8349, 110002056451, AA11439205

1996 International Topical Meeting on Optical Computing - Preface
J Tanida; T Kurokawa; M Takeda; T Yatagai
Nov. 1996, OPTICAL REVIEW, 3, 6A, U1-U1, English, Others, 1340-6000, WOS:A1996WD97000001

Recent Progress in Optical Computing : A Review of OC'96
TAKEDA Mitsuo
18 Jun. 1996, 光波センシング技術研究会講演論文集 = Proceedings of ... Meeting on Lightwave Sensing Technology, 17, 97-98, Japanese, 10015809668, AN10547747

Vortices in optical ray-vector fields and their influence on the phase unwrapping problem
武田光夫
応用物理学会, 1996, Oyobuturi, 65, 8, 811-816, Japanese, Peer-reviwed, Introduction other, 0369-8009, 10001756270, AN00026679

Fourier fringe analysis and its application : an overview
武田光夫
時間的および(または)空間的に変調ざれた,疑似周期構造をもつしま図形から,被測定物体に関する情報をいかに精度よく取り出すかは,光波,物質波,音波など,波動を利用したすべての計測技術に共通してあらわれる最も基本的な問題である.ここでは,われわれの研究室で開発されたフーリ工変換法とよばれるしま画像解析技術に焦点をあてて,最近の応用分野の発展を紹介し,今後の研究の動向を展望する., The Japan Society of Applied Physics, Jun. 1993, Oyobuturi, 62, 6, 579-583, Japanese, Peer-reviwed, Introduction other, 0369-8009, 10006622599, AN00026679

Optical Interconnection : An overview on passive optical elements and components
武田光夫
1992, IEICE Transactions C-I, J75-C-I, 5, 269-277, Japanese, Peer-reviwed, Introduction other

Optical neurocomputing : A review
武田光夫
1988, Johoshori, 29, 9, 984-992, Japanese, Peer-reviwed, Introduction other

Optical interconnection : A review
武田光夫
VLSI技術による高速・高密度化は,集積回路内部のみならず,コンピューターシステムの各階層における結線量の増大,信号伝搬の遅延,線路の帯域不足などの結線上の問題のために,間もなく限界に近づきつつある.コミュニケーションクライシスと呼ばれるこの障壁を乗う越えるために,光を用いた結線が研究されている.ここでは,高速,広帯域,無誘導,並列性などをはじめ多くの特長をもつ,光インター:ネクションについて,現在提案されている方式を階層別に紹介するとともに,その基礎となる考え方や原理的限界について述べる., The Japan Society of Applied Physics, Mar. 1987, Oyoboturi, 56, 3, 361-367, Japanese, Peer-reviwed, Introduction other, 0369-8009, 130003591977, AN00026679

Highly Sensitive Holography Interferometry by Spatial Carrier-Fringe-Pattern Analysis
Tung Zhi-sin; Takeda Mitsuo
The University of Electro-Communications, 29 Feb. 1984, Reports of the University of Electro-Communications, 34, 2, 231-238, Japanese, 0493-4253, 110000264426, AN00152480

Subfringe interferometry fundamentals : a review
武田光夫
Jan. 1984, Kogaku, 13, 1, 55-65, Japanese, Peer-reviwed, Introduction other, 10008652906

光学技術の辞典
黒田和男; 荒木啓介; 大木裕史; 武田光夫; 森伸芳; 谷田貝豊彦
Joint editor, 朝倉書店, Aug. 2014

Advances in Speckle Metrology and Related Techniques
W. Wang; S. G. Hanson; M. Takeda
English, Joint work, Optical vortex metrology, WILEY -VCH Verlag GmbH, Feb. 2011

光技術総合辞典
武田光夫; 分担執筆
Japanese, Joint work, オプトロニクス社編集部, Dec. 2004

Perspectives in Engineering Optics
M. Takeda; Book C
English, Joint work, Space-time anlalogy in absolute optical profilometry using frequency-scan techniques: A tutorial review, Anita Publications, New Delhi, Apr. 2003

Complex-Valued Neural Networks, Theory and Applications
M. Takeda; T. Kishigami; Book Cha
English, Joint work, Complex neural network model with analogy to self-oscillation generated in an optical phase-conjugate resonator, World Scientific, Pub. Ltd, Singapore, 2003

最新光学技術ハンドブック
辻内順平; 黒田和男; 大木裕; 河田聡; 小島忠; 武田光夫; 南節雄; 谷田貝豊彦
Japanese, Editor, 朝倉書店, Sep. 2002

応用物理学会編「応用物理用語大辞典」
武田光夫
Japanese, Joint work, オーム社, 1998

光サイエンス辞典
武田光夫
Dictionary or encycropedia, Japanese, オプトロニクス社, 1998

Handbook of Optical Computing
武田光夫
Japanese, Joint work, Asakura Shoten Pub. Co. , Tokyo, 1997

Fundamentals and New Application of Liquid Crystal Devices
武田光夫
Japanese, Joint work, Sigma Pub. Co. , Tokyo, 1997

Dictionary of optoelecronics
武田光夫
Japanese, Joint work, Ohmsha Pub. Co. , Tokyo, 1996

Statistical Optics
武田光夫
Japanese, Editor, Maruzen Pub. Co. , Tokyo, 1992

Optical Computing in Japan
M. Takeda; Book C
English, Joint work, Nava Science Pub. Inc. , New York, 1990

Neurocomputer
武田光夫
Japanese, Joint work, Science Forum Pub., 1989

Handbook of Optoelecronics
武田光夫
Japanese, Joint work, Shokodo Pub. Co. , Tokyo, 1988

Handbook of Optical Engineering
武田光夫
Japanese, Joint work, Asakura Shoten Pub. Co. , Tokyo, 1986

Dictionary of physics
武田光夫
Japanese, Joint work, Baifukan Pub. Co. , Tokyo, 1984

Measurement of extreme physical phenomena by Fourier fringe analysis
M. Takeda
Keynote oral presentation, English, ICO-22, 22nd General Congress of the International Commission for Optics, ICO-22, 22nd General Congress of the International Commission for Optics, Puebla, Mexico, International conference
Aug. 2011

Coherence holography: Principle and Applications
M. Takeda
Keynote oral presentation, English, SPIE Optical Metrology, SPIE Optical Metrology, Munich, Germany, International conference
May 2011

Coherence Holography: A Tutorial Review
M. Takeda
Invited oral presentation, English, OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging (DH), OSA Topical Meeting on Digital Holography and Three-Dimensional Imaging (DH), Tokyo, Japan, International conference
May 2011

非対称ナル干渉法と高コントラスト撮像法
西川淳; 田村元秀; 横地界斗; 黒川隆志; 村上尚史; L. Abe; 小谷隆行; 村上浩志; A. Tavrov; 武田光夫
Oral presentation, Japanese, 第11回 宇宙科学シンポジウム,第11回 宇宙科学シンポジウム
Jan. 2011

Coherence Holography: Principle and Applications
M. Takeda; W. Wang; D. N. Naik; Y. Miyamoto
Keynote oral presentation, English, Optical Society of India, International Conference on Contemporary Trends in Optics and Opto Electronics, Optical Society of India, International Conference on Contemporary Trends in Optics and Opto Electronics, Thiruvananthapuram, India, International conference
Jan. 2011

Polarization speckles and generalized Stokes vector wave: a review
M. Takeda; W. Wang; S. G. Hanson
Invited oral presentation, English, Speckle 2010, Speckle 2010, Florianopolis, Brazil, International conference
Sep. 2010

Utilizing the coherence properties of light for optical metrology
M. Takeda
Invited oral presentation, English, HoloMet 2010 3rd International Workshop on Perspectives of Optical Imaging and Metrology, HoloMet 2010 3rd International Workshop on Perspectives of Optical Imaging and Metrology, Balatonfuered, Hungary, International conference
Jun. 2010

Measurements of extreme physical phenomena by Fourier fringe analysis
M. Takeda
Invited oral presentation, English, International Conference on Adavanced Phase Measurement Methods in Optics and Imaging, AIP, Ascona, Switzerland, International conference
May 2010

Vector correlation for polarization speckle and its application to optical metrology
W. Wang; S.G. Hanson; M. Takeda
Invited oral presentation, English, The Ninth International Conference“Correlation Optics 2009", European Physical Society, Chernivtsi, Ukraine, International conference
Sep. 2009

Propagation of the polarization coherence matrix through complex ABCD-optical systems
S.G. Hanson; W. Wang; D. N. Naik; M. Takeda
Invited oral presentation, English, The Ninth International Conference“Correlation Optics 2009”, European Physical Society, Chernivtsi, Ukraine, International conference
Sep. 2009

Coherence holography: A thought on synthesis and analysis of optical coherence field
M. Takeda; W. Wang; D. N. Naik
Invited oral presentation, English, 6th International Workshop on Advanced Optical Metrology, Fringe 2009, Univ. of Stuttgart, Stuttgart, Germany, International conference
Sep. 2009

Development of Fourier-fringe analysis and its applications in extreme optical metrology
M. Takeda
Keynote oral presentation, English, Eighth Japan-Finland Joint Symposium on Optics in Engineering, OIE 09, NGPA, Tokyo Univ of Science, Optical Society of Japan, Tokyo, Japan, International conference
Sep. 2009

Optical Vortex Metrology
M. Takeda; W. Wang; S. G. Hanson; Y. Miyamoto
Invited oral presentation, English, The 9th International Symposium on Measurement Technology and Intelligent Instruments, International Committee on Measurements and Instrumentation, Russian Academy of Sciences, St. Petersburg, Russia, International conference
Jun. 2009

Optical vortex metrology: Displacement and flow measurements with phase singularities
M. Takeda; W. Wang; S. G. Hansaon
Invited oral presentation, English, Japan Taiwan Bilateral Science and Technology Symposium, Frontiers in Functional Optics, Japan Taiwan Bilateral Science and Technology Symposium, Frontiers in Functional Optics, Utsunomiya, Japan, International conference
Nov. 2008

Coherence dynamics, coherence topology, and singular optical coherence
W. Wang; M. Takeda
Invited oral presentation, English, International Topical Meeting on Information Photonics 2008, International Topical Meeting on Information Photonics 2008, Awaji, Japan, International conference
Nov. 2008

Coherence holography and spatial frequency comb for 3-D coherence imaging and coherence vortex generation
M. Takeda; W. Wang; Z. Duan; Y. Miyamoto; J. Rosen
Invited oral presentation, English, Best of Topicals in Frontiers in Optics (FiO)/Laser Science XXIV (LS) Conference, Best of Topicals in Frontiers in Optics (FiO)/Laser Science XXIV (LS) Conference, OSA, Rochester, USA, International conference
Oct. 2008

Coherence holography and time-space analogy in coherence functions
M. Takeda; W. Wang; Z. Duan; Y. Miyamoto
Keynote oral presentation, English, International Symposium to Commemorate the 60th Anniversary of the Invention of Holography, Proc. International Symposium to Commemorate the 60th Anniversary of the Invention of Holography, Springfield, USA), International conference
Oct. 2008

Experimental investigation of the singular phenomena in statistical optical fields
W. Wang; M. Takeda
Invited oral presentation, English, The Nature of Light: Light in Nature II, SPIE, The Nature of Light: Light in Nature II, San Diego, USA, International conference
Aug. 2008

Coherence holography and singular optical coherence
M. Takeda; W. Wang
Invited oral presentation, English, Optics and Photonics for Information Processing II, Optics and Photonics for Information Processing II, Proc. of SPIE, San Diego, USA, International conference
Aug. 2008

Coherence holography and 3-D coherence synthesis for dispersion-free spatial frequency tomography and profilometery
M. Takeda; W. Wang; Z. Duan; Y. Miyamoto
Invited oral presentation, English, Photon 08, Photon 08, IOP, Edinburgh, UK, International conference
Aug. 2008

Coherence Holography and Spatial Frequency Comb for 3-D Coherence Imaging
M. Takeda; W. Wang; Z. Duan; Y. Miyamoto; J. Rosen
Invited oral presentation, English, OSA Topical Meeting on Digital Holography, OSA Topical Meeting on Digital Holography, St. Petersburg, USA, International conference
Mar. 2008

位相特異点のポアンカレ球表現とその流体運動解析への応用
石島玲華; W. Wang; 横関友亮; 松田充弘; M. R. Dennis; S. G. Hanson; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

単一分光帯域インターフェログラムの位相ゼロクロス情報を用いた白色干渉計測法
木村高啓; M. Pawlowski; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007
Nov. 2007

コヒーレンスホログラフィーにより生成された３次元空間コヒーレンス関数の新検出法
韋冬; 宮本洋子; 武田 光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

幾何学的位相によるナル干渉計の波長無依存性
横地界斗; A. Tavrov; 西川 淳; L. Abe; 田村元秀; 武田光夫; 黒川隆志
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

偏光スペックルのストークスベクトル相関
松田充弘; W. Wang; S. G. Hanson; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

ホログラムの歪みの補正による異方性の少ないラゲールガウスビームの発生II
尾藤浩一; 尾崎雄亮; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

軌道コヒーレンス角運動量とコヒーレンス関数の波と粒子の双対性
W. Wang; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

コヒーレンス角運動量のスピンと軌道角運動量への分解
W. Wang; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

コヒーレンス渦場のフラクショナルトポロジカルチャージ
W. Wang; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

偏光の特異点の生成と検出
五十嵐早苗; 米村高志; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

ホログラムで発生させたドーナツビームの異方性の定量評価
尾崎雄亮; 和田篤; 尾藤 浩一; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

光子の軌道角運動量重ね合わせ状態検出における余分な方位角成分の影響
青木俊介; 宮本洋子; 川瀬大輔; 竹内繁樹; 武田光夫; 笹木敬司
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

スペックル状パターンの複素信号表現による擬似ストークスベクトル相関法
石島玲華; W. Wang; 松田充弘; S. G. Hanson; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2007 講演予稿集,日本光学会 Optics and Photonics Japan 2007 講演予稿集
Nov. 2007

Optical vortex metrology: Are phase singularities foes or friends in optical metrology?
M. Takeda; W. Wang; S. G. Hanson; Y. Miyamoto
Keynote oral presentation, English, 8th International Conference on Correlation Optics, 8th International Conference on Correlation Optics (Chernivtsi, Ukraine), Chernivtsi, Ukraine, International conference
Sep. 2007

Coherence vortices, coherence current, and the conservation laws in coherence dynamics
W. Wang; S. G. Hanson; M. Takeda
Invited oral presentation, English, 8th International Conference on Correlation Optics, 8th International Conference on Correlation Optics (Chernivtsi, Ukraine), Chernivtsi, Ukraine, International conference
Sep. 2007

Optical vortex metrology: Displacement measurements with phase singularities
M.Takeda; W. Wang; S. G. Hanson; Y. Miyamoto
Invited oral presentation, English, Sixth Euro-American Workshop on Information Optics, Sixth Euro-American Workshop on Information Optics (AIP), Reykjavik, Iceland, International conference
Jul. 2007

Optical Vortex Metrology: A new optical sensing technique using phase singularities in random optical vortex fields
M. Takeda
Invited oral presentation, Japanese, 日本光学会第32回光学シンポジウム, Proc. 32nd Optics Simposium
Jul. 2007

Coherence holography: Priniciple and applications
M. Takeda; W. Wang; Z. Duan; Y. Miyamoto
Invited oral presentation, English, Workshop on Random Electromagnetic Fields, Workshop on Random Electromagnetic Fields, Orland, USA, International conference
May 2007

非対称ナル干渉と補償光学を融合した系外惑星直接検出のための超高コントラスト撮像法(2)
西川淳; Lyu Abe; 村上尚史; A. Tavrov; 田村元秀; 小谷隆行; 横地界斗; 黒川隆志; 武田光夫
Oral presentation, Japanese, 日本天文学会2007年秋季年会,日本天文学会2007年秋季年会
2007

Coherence Holography and Spatial Frequency Comb: Control and Synthesis of Spatial Coherence Function for Dispersion-free Photonic Sensing
M. Takeda; W. Wang; Z. Duan; Y. Miyamoto
Keynote oral presentation, English, 8th International Conference on Optoelectronics, Fiber Optics and Photonics, Photonics 2006, 8th International Conference on Optoelectronics, Fiber Optics and Photonics, Photonics 2006, Hyderabad, India, International conference
Dec. 2006

解析信号表現されたランダムパターンの位相特異点の空間構造を利用した光計測とその生物学的運動解析への応用
石島玲華; W. Wang; Y. Qiao; 横関友亮; 本多大吾; 松田充弘; S. G. Hanson; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photinics Japan 2006 講演予稿集,日本光学会 Optics and Photinics Japan 2006 講演予稿集
Nov. 2006

Rotational coherence current and the origin of coherence vortex," Extended Abstracts
W. Wang; M. Takeda
Oral presentation, English, OSJ, Optics and Photonics Japan 2006
Nov. 2006

光渦計測法によるスペックル変位および変形計測
石島玲華; W. Wang; 横関友亮; S. G. Hanson; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photinics Japan 2006 講演予稿集,日本光学会 Optics and Photinics Japan 2006 講演予稿集
Nov. 2006

ホログラムの歪みの補正による異方性の少ないラゲールガウスビームの発生
尾藤浩一; 和田篤; 米村高志; 青木俊介; 五十嵐早苗; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photinics Japan 2006 講演予稿集,日本光学会 Optics and Photinics Japan 2006 講演予稿集
Nov. 2006

Complex amplitude correlation of dynamic speckle and its application to speckle metrology
W. Wang; S. G. Hanson; M. Takeda
Oral presentation, English, Extended Abstracts, Optics and Photonics Japan 2006
Nov. 2006

Arbitrarily shaping of coherence function: A new optical design in coherence domain
W. Wang; Z. Duan; S. G. Hanson; M. Takeda
Oral presentation, English, Extended Abstracts, Optics and Photonics Japan 2006
Nov. 2006

非対称ナル干渉計と波面補償による系外惑星直接検出のための超高ダイナミックレンジ光学系
西川淳; 村上尚史; Abe Lyu; 小谷隆行; 田村元秀; 横地界斗; 黒川隆志; A. Tavrov; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics and Photinics Japan 2006 講演予稿集,日本光学会 Optics and Photinics Japan 2006 講演予稿集
Nov. 2006

Common-path achromatic nulling interferometer for star coronagraphy: demonstrator and images on breadboard
A. Tavrov; K. Yokochi; J. Nishikawa; M. Tamura; T. Kurokawa; M. Takeda
Oral presentation, English, Extended Abstracts, Optics and Photonics Japan 2006
Nov. 2006

Coherence Holography: Principle and Applications
M. Takeda; W. Wang; Z. Duan; Y. Miyamoto
Invited oral presentation, English, Speckle06: Speckles, from Grains to Flowers, Proc. SPIE, Speckle06: Speckles, from Grains to Flowers, Nimes, France, International conference
Sep. 2006

コヒーレンスホログラフィー：コヒーレンス場を生成・制御する新ホログラフィー技術
武田光夫
Invited oral presentation, Japanese, 第53回応用物理学関係連合講演会講演予稿集No.0, 第53回応用物理学関係連合講演会講演予稿集No.0
Mar. 2006

Coherece holography for 3-D coherence synthesis: Yet another approach to dispersion-free optical coherence tomography and profilometry
M. Takeda
Invited oral presentation, English, Symposium on Molecular Imaging: Biomedical Photonics in 21st Century, Symposium on Molecular Imaging: Biomedical Photonics in 21st Century, Tokyo, Japan, International conference
Mar. 2006

ベリー位相を利用した太陽系外惑星検出用干渉計
武田光夫
Others, Japanese, 日本学術振興会光エレクトロニクス第130委員会第246回研究会資料, 日本学術振興会光エレクトロニクス第130委員会第246回研究会資料
Dec. 2005

ラゲールガウスビーム発生用ホログラムの歪みによるビームの変形
和田篤; 大湊博之; 米村高志; 尾藤浩一; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会Optics Japan 2005 講演予稿集,Optics Japan 2005 講演予稿集
Nov. 2005

空間コヒーレンス関数の3次元分布の直接可視
Wei Wang; Zhihui Duan; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2005 講演予稿集,日本光学会 Optics Japan 2005 講演予稿集
Nov. 2005

空間周波数可制御光源を用いた絶対干渉計測法
段志輝; 韋冬; 山田明紀; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2005 講演予稿集,日本光学会 Optics Japan 2005 講演予稿集
Nov. 2005

液晶波長可変フィルタを用いた正弦波状波長走査フィードバック干渉計による実時間距離測定
佐々木修己; 斎藤昭洋; 鈴木孝昌; 武田光夫; 黒川隆志
Oral presentation, Japanese, 日本光学会 Optics Japan 2005 講演予稿集,日本光学会 Optics Japan 2005 講演予稿集
Nov. 2005

空間コヒーレンス関数の位相特異点の局所構造
Wei Wang; 段志輝; Steen G. Hanson; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2005 講演予稿集,日本光学会 Optics Japan 2005 講演予稿集
Nov. 2005

偏光を利用する位相測定法を用いたラゲールガウスビームの位相分布測定II
米村高志; 和田篤; 尾藤浩一; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2005 講演予稿集,日本光学会 Optics Japan 2005 講演予稿集
Nov. 2005

スペックルパターンのRiesz変換解析信号の位相特異点を用いたナノ変位計測
横関友亮; Wei Wang; 石島玲華; 和田篤; Steen Hanson; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2005 講演予稿集,日本光学会 Optics Japan 2005 講演予稿集
Nov. 2005

Recent developments in spectral interference microscope for surface profilometry and tomography of discontinuous micro objects
M. Takeda; D. S. Mehta; T. Kurokawa
Invited oral presentation, English, Nanoengineering Symposium 2005, Nanoengineering Symposium 2005, Daejeon, Korea, International conference
Oct. 2005

EUVA's challenges toward 0.1nm accuracy in EUV at-wavelength interferometry
K. Sugisaki; M. Hasegawa; M. Okada; Y. Zhu; K. Otaki; Z. Liu; M. Ishii; J. Kawakami; K. Murakami; J. Saito; S. Kato; C. Ouchi; A. Ohkubo; Y. Sekine; T. Hasegawa; A. Suzuki; M. Niibe; M. Takeda
Invited oral presentation, English, Fringe’05: International Workshop on Automatic Processing of Fringe Patterns, Fringe’05: International Workshop on Automatic Processing of Fringe Patterns, Stuttgart, Germany, International conference
Sep. 2005

Coherence holography and 3-D coherence synthesis for optical tomography and profilometry
M. Takeda; W. Wang; Z. Duan; Y. Miyamoto
Invited oral presentation, English, Sixth Japan-Finland Joint Symposium on Optics in Engineering, Sixth Japan-Finland Joint Symposium on Optics in Engineering, Sapporo, Japan, International conference
Sep. 2005

Coherence holography: Holographic imaging with coherence function
M. Takeda; W. Wang; Z. Duan; Y. Miyamoto
Invited oral presentation, English, Holography 2005, International Conference on Holography, Optical Recording, and Processing of Information, Bulgarian Academy of Science, Varna, Bulgaria, International conference
May 2005

Recent developments in spectral interference microscopes
M. Takeda; D. S. Mehta; M. E. Pawlowski; T. Kurokawa
Invited oral presentation, English, 8th International Symposium on Laser Metrology, Proc. SPIE, 8th International Symposium on Laser Metrology, Merida, Mexico, International conference
Feb. 2005

Achormatic out-of-plane common-path interferometer: nulling of polychromatic light
A. Tavrov; T. Kurokawa; M. Takeda
Others, English, TUAT/UEC, The 21st Century COE Joint Symposium, Technical Digest
Dec. 2004

Pseudo-phase information of complex analytic signal of speckle fields and its applications: Micro-displacement measurement based on phase-only correlation in signal domain
W. Wang; N. Ishii; Y. Miyamoto; M. Takeda
Others, English, TUAT/UEC, The 21st Century COE Joint Symposium, Technical Digest
Dec. 2004

非点収差による光の位相特異点の反転と軌道角運動量の保存
和田篤; 大湊寛之; 米村高志; 宮本洋子; 武田光夫
Others, Japanese, 東京農工大・電通大21世紀ＣＯＥプログラム合同シンポジウム予稿集「ナノ未来材料とコヒーレント光科学」予稿集
Dec. 2004

ラゲールガウスビームを用いた光トラップとトラップ力の評価
大湊寛之; 和田篤; 米村高志; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2004 講演予稿集
Nov. 2004

白色干渉縞解析法の特性比較(II)
坂野洋平; M. Pawlowski; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2004 講演予稿集
Nov. 2004

非散乱性表面を持つ鏡面状物体の３次元形状計測
横関友亮; 廣岡成一; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2004 講演予稿集
Nov. 2004

偏光を利用した位相測定法を用いたラゲールガウスビームの位相分布測定
米村高志; 和田篤; 大湊寛之; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2004 講演予稿集
Nov. 2004

Statistical properties of analytic signal of white-light speckle pattern and its application to in-plane displacement
W. Wang; N. Ishii; Y. Miyamoto; M. Takeda
Oral presentation, English, Extended Abstracts, Optics Japan 2004
Nov. 2004

Spatio-spectral interferometry with adaptive numerical refocusing
M. Pawlowski; Y. Sakano; Y. Miyamoto; M. Takeda
Oral presentation, English, Extended Abstracts, Optics Japan 2004
Nov. 2004

ホログラムを用いて発生させたドーナツビームのモード解析
和田篤; 大湊寛之; 米村高志; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2004 講演予稿集
Nov. 2004

Theory and principle of three-dimensional shape measurements: From macroscopic to microscopic objects
M. Takeda
Invited oral presentation, English, Proc. Joint Japan-Tunisia Workshop on Computer Systems and Information Technology, JT-CSIT'04, Proc. Joint Japan-Tunisia Workshop on Computer Systems and Information Technology, JT-CSIT'04, Tokyo, Japan, International conference
Jul. 2004

Space-time analogy in synthetic coherence functions applied to optical tomography and profilometry
M. Takeda; J. Rosen; D. Zhihui
Keynote oral presentation, English, Proceedings of International Conference on Laser Applications and Optical Metrology, New Delhi, India, International conference
Dec. 2003

非点収差を与えたラゲールガウスビームの伝播過程の解析II
和田篤; 大湊寛之; 米村高志; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2003 講演予稿集
Dec. 2003

ホログラムを用いた光ビームの位相特異点の操作
大湊寛之; 和田篤; 米村高志; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2003 講演予稿集
Dec. 2003

白色干渉縞の縞解析法の比較：包絡線の最大値検出 vs. 分光位相勾配検出
坂野洋平; 仙場淳; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2003 講演予稿集
Dec. 2003

スッペックル場の複素解析信号の擬似位相情報とその応用(I)：位相特異点を用いた微小変位計測
石井信生; Wang Wei; 宮本洋子; 服部修二; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2003 講演予稿集
Dec. 2003

スッペックル場の複素解析信号の擬似位相情報とその応用(II)：信号領域で振幅を同一化した位相相関法による微小変位計測
Wang Wei; 石井信生; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2003 講演予稿集
Dec. 2003

空間周波数走査とフーリエ縞解析による不連続物体の3次元形状計測
巻幡智明; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan 2003 講演予稿集
Dec. 2003

SSG-DBRレーザーを用いた高速・高分解能OFDR-OCT
崔東学; 天野卓治; 廣岡秀明; 武田光夫; 清水公也; 大林康二
Oral presentation, Japanese, 日本光学会光学シンポジウム講演番号13
Jun. 2003

Absolute 3-D sensor with single fringe-pattern recording
Y. Kasai; Y. Miyamoto; M. Takeda; H. Tanaka; R. Gu
Keynote oral presentation, English, 7th International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, Proc. SPIE, Russian Academy of Science, Novosibirsk, Russia, International conference
Sep. 2002

Absolute 3-D sensor with single fringe-pattern recording
Y. Kasai; Y. Miyamoto; M. Takeda; H. Tanaka; R. Gu
Invited oral presentation, English, 7th International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, Proc. SPIE, International conference
Sep. 2002

Theory and principle of three-dimensional shape measurements: from macroscopic to microscopic objects
M. Takeda
Invited oral presentation, English, Technical Digest of The Rank Prize Funds Mini-symposium on Optical Metrology Techniques for Industrial Applications, The Rank Prize Funds, Loughborough, UK, International conference
Apr. 2002

Theory and principle of three-dimensional shape measurements: from macroscopic to microscopic objects
M. Takeda
Invited oral presentation, English, Technical Digest of The Rank Prize Funds Mini-symposium on Optical Metrology Techniques for Industrial Applications, International conference
Apr. 2002

Evolution of Optical Vortices and Phase Singularities in Scattered Random Fields: -Experimental Observation of Their 3-D Structures-
T. Sotomaru; H. Tsuchiya; Y. Miyamoto; M. Takeda
Invited oral presentation, English, International Balatonfuered Workshop on New Prospectives for Optical Metrology, HoloMet 2001 (Baratonfuered, Hungary), International conference
Jun. 2001

Multidimensional fringe pattern analysis: Technique and Analysis
M. Takeda
Keynote oral presentation, English, Conference Handbook, Applied Optics and Opt-Electronics Conference, Institute of Physics（Loughborough, UK）（Invited Plenary Paper）, International conference
Sep. 2000

Fourier transform profilometry
M. Takeda
Invited oral presentation, English, Trends in Optical Nondestructive Testing and Inspection（P. K. Rastogi and D. Inaudi, Eds）Elsevier,（Invited Paper）, International conference
May 2000

Holographic generation of a Laguerre-Gaussian beam with higher-order phase singularity
M. Masuda; A. Wada; T. Ohtani; Y. Miyamoto; M. Takeda
Invited oral presentation, English, International Berlin Workshop on New Prospects of Holography and 3-D Metrology（Invited Paper）, International conference
May 2000

ラゲールガウスビーム発生のための位相ホログラム素子の作成（II）
和田篤; 増田満俊; 大谷巧; 宮本洋子; 武田光夫
Oral presentation, Japanese, 日本光学会 Optics Japan '99 講演予稿集
Nov. 1999

A method to evaluate the geometrical spin-redirection phase for nonplanar ray
A. V. Tavrov; Y. Miyamoto; T.Kawabata; M. Takeda; V. V. Andree
Oral presentation, English, Extended Abstracts, Optics Japan '98
Sep. 1998

The Optical Society of America

SPIE (The International Society for Optical Engineering)

Japan Society of Applied Physics

The Optical Society of Japan

Basic research for the creation of "Spatial Statistical Optics"
Takeda Mitsuo; HANSON Steen, G.; WANG Wei; NAIK Dinesh, N.
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Utsunomiya University, Grant-in-Aid for Scientific Research (C), Noting the symmetry between space and time variables in the wave equation, a new realm of statistical optics, called spatial statistical optics, has been created in which the ensemble average is replaced by the spatial average, rather than by the time average in conventional statistical optics. The following results have been achieved. (1) The conditions on a source and an optical system have been clarified for the statistical field to have wide-sense spatial stationarity. (2) The theory and the method of experiment have been proposed for spatial statistical analysis of vectorial optical fields. (3) The methods for generation of polarization speckle fields with a birefringent scatter plate and their spatial statistical analysis have been proposed. (4) New imaging techniques have been proposed that are based on spatial statistical optics., 25390090
01 Apr. 2013 - 31 Mar. 2017

Very high dynamic range optics for direct detection of extra-solar planets
NISHIKAWA Jun; KUROKAWA Takashi; TAKEDA Mitsuo; TAMURA Motohide
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, National Astronomical Observatory of Japan, Grant-in-Aid for Scientific Research (B), We studied an unbalanced nulling interferometer(UNI), adaptive optics, and coronagraphs in order to obtain a very high dynamic range optics for direct detection of extra-solar planets. Aλ/600 rms wavefront correction was made virtually when the accuracy of the adaptive optics wasλ/100 rms thanks to the effect of the UNI, and a noise level of the focal image of the coronagraph was suppressed by more than one order of magnitude. An eight-octant phase mask showed a contrast of 2E-8 with a bandwidth of 10%. A four-quadrant phase mask was shown to function as a stable UNI., 21360037
2009 - 2011

Polarization coherence synthesizer : Singular optics of generalized Stokes fields with application to optical metrology
TAKEDA Mitsuo; MIYAMOTO Yoko
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (B), A basic principle of a polarization-coherence synthesizer was proposed, and foundation was laid for the technique that can control both polarization and spatial coherence of statistical 3-D vectorial optical fields simultaneously. A novel scheme of coherence holography was devised for controlling the elements of a polarization-coherence matrix of a vectorial optical field. A technique, called Stokes holography, that reconstructs a desired image as a 3-D distribution of generalized Stokes parameters was proposed and experimentally demonstrated., 21360028
2009 - 2011

A study of high dynamic range optics with nulling interferometer and adaptive optics
NISHIKAWA Jun; KUROKAWA Takashi; TAKEDA Mitsuo; TAMURA Motohide; MURAKAMI Naoshi; KUROKAWA Takashi; TAKEDA Mitsuo; TAMURA Motohide
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, National Astronomical Observatory of Japan, Grant-in-Aid for Scientific Research (B), 太陽系以外の惑星を直接検出する高ダイナミックレンジ光学系として、波面誤差補正によるスペックルノイズ除去と惑星よりきわめて強い恒星の回折光の除去を交互に2回ずつ行う、初段補償光学、非対称ナル干渉計、位相振幅補正補償光学、コロナグラフ、からなる4 段階複合法を研究した。非対称ナル干渉計の波面誤差拡大効果で実質的に補償光学の限界を超えた波面精度を達成し、コロナグラフで広帯域の回折光の除去などを実証した。, 19360036
2007 - 2008

Coherence holography : Fundamentals and applications of an unconventional holographic technique for synthesis and control of coherence fields
TAKEDA Mitsuo; MIYAMOTO Yoko
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (B), 3次元物体をランダムな光波動場の空間コヒーレンス関数として再生するコヒーレンスホログラフィーの新原理を提案し,実験によりその有効性を実証した.コヒーレンスホログラムを計算機合成することにより,3次元空間コヒーレンス関数を自由に制御・シンセシスする技術を実現した.この新機能を用いた新しい工学的応用として波長分散のない3次元形状計測の可能性を実証した.また,基礎科学面ではコヒーレンス関数に位相特異点をもつコヒーレンス渦場を生成し,コヒーレンス場の運動量や角運動量などコヒーレンス場の力学的性質を解明した., 18360034
2006 - 2008

太陽系外地球型惑星の直接検出のための超高コントラスト装置の開発
村上 尚史; 武田 光夫
日本学術振興会, 科学研究費助成事業, 国立天文台, 特定領域研究, 我々は,太陽系外惑星を直接撮像するため,非対称ナル干渉計(Unbalanced Nulling Interferometer,UNI)および補償光学系(Phase-AmplitudeCorrection,PAC)を用いた超高コントラスト装置(通称,UNI-PAC法)を提案し,検証実験を行った。系外惑星の直接撮像を行うためには,明るい恒星からのスペックルノイズを10^<-10>レベルにまで減らすため,λ/10000rmsもの超高面精度の光学素子や光波面補正が必要とされる。提案する手法は,UNIによる光波面誤差の拡大とPACによる波面補正を行い,更に後置コロナグラフを用いることにより,上記のような高面精度のオプティクスを必要としないという,画期的な手法である。 平成19年度は,UNI部の安定・高性能化を目指した光学系の改修,およびPAC部の構築を行った。具体的には,ナル干渉計の振動抑制のための光学素子マウント製作,傾斜補正鏡の導入,可変形鏡および波面センサ部のマウント製作を行った。その結果,ナル干渉計単体で恒星モデル像のスペックルノイズを,5λ/D以遠で10^<-7>オーダーにまで抑制させることに成功した。また、UNIによる波面誤差拡大の観測に成功し,拡大率がほぼ理論的予測と一致することを確認した。また,後置コロナグラフとして3Dサニャックナル干渉計を導入し,提案する装置全体の検証実験を行った。その結果,3Dサニャックナル干渉計単体と比較して高いコントラストを達成することができた。 更に,後置コロナグラフとして,像面位相マスクコロナグラフの使用も検討した。特に,従来提案されている4分割位相マスクを多分割化(8分割)にすることにより,更に効率的に恒星光除去が行えることを,数値シミュレーションおよび検証実験により明らかにした。, 19015009
2007 - 2007

幾何学的位相を利用した立体サニャック干渉光学計の研究
黒川 隆志; 武田 光夫
日本学術振興会, 科学研究費助成事業, 東京農工大学, 萌芽研究, 現在までに約260個の太陽系外の惑星(系外惑星と呼ぶ)が発見されているが,そのほとんどは,恒星の測光などの間接的な観測によるものである.現在,系外惑星からの光を直接観測し,特に地球型惑星のスペクトル中に生命の痕跡である酸素の有無を調べることが現代天文学の最大の課題の1つとなっている. 本研究では,コロナグラフとして幾何学的位相変調を用いた3次元サニャックナル干渉計の性能評価実験を行った.緑と赤(532nmと632.8[nm])の2波長のレーザーを同時にナル干渉させ,3次元サニャック干渉計の波長無依存性を検証する実験を行った.像面では,強め合う干渉のピークと弱め合う干渉のピークで,赤色レーザでは8.43×10^<-5>,緑色レーザでは3.15×10^<-5>となり,波長に依存しないナル干渉を確認した。また,瞳面全体での消光比の平均は,赤色レーザで4.88×10^<-4>,緑色レーザで3.42×10^<-4>となり,20%に近い比帯域でアクロマティック性を証明した.これにより,本手法の波長無依存性を実証することができた. 像面,瞳面ともほぼ同様の結果が得られたが,緑色レーザと赤色レーザでの干渉パターンが異なっている.原因としては,系全体のドリフト,ビームスプリッタでの分散などが考えられる., 18656018
2006 - 2007

3D microscopy based on optical frequency comb by RF control
KUROKAWA Takashi; SHIODA Tatsutoshi; TAKEDA Mitsuo
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Tokyo University of Agriculture and Technology, Grant-in-Aid for Scientific Research (B), In our previous report, the optical frequency comb generator consisting of two phase modulators in tandem we used generated the narrow bandwidth of the comb spectrum, only 2 nm, and resulted in the limited resolution up to 300μm. And some noises of many side-lobes appeared around the interferometric peaks due to a rectangular frequency comb spectrum. Furthermore, it took a long time for the data acquisition because the point-to-point scanning was used in a fiber-optic interferometer. To improve the performance of our previous system, we introduced new functions of a broad band frequency comb and a line-type image sensor to realize a frequency comb-based interferometric microscope. One of the improvements in the proposed system is that a broadband frequency comb spectrum of over 10 nm was obtained by combining a waveguide type-frequency comb generator^<6-8)> consisting of the phase modulator installed in the Fabry-Perot cavity and a subsequent wavelength equalizer^<9)>. The depth resolution is finally improved up to 35 μm, and the side-lobes in the interferometric signals also disappeared. Another important improvement is to realize a high-speed observation of three-dimensional images by the use of a line type-image sensor for capturing a line image in a horizontal direction at a time. The measurement resolution narrowed finally to 35 μm by introducing the waveguide-type frequency comb generator and the wavelength equalizer. Furthermore, introducing the line image sensor can obtain the simultaneous measurement of the whole horizontal cross sectional image of the interferometric signal. We successfully demonstrated the 3 dimensional surface profilometry of a Japanese 10-yen coin and observation of a cross sectional tomography image of transparent thin films by varying the comb frequency interval without mechanical shift. The dynamic range in the depth direction was about 1.1 mm and the measurement resolution was 35μm. The standard deviation of seven times thickness measurements was 5μm., 18360164
2006 - 2007

Investigation of the quantum reflection of atoms on a solid state surface
SHIMIZU Kazuko; TAKEDA Mitsuo; MORINAGA Makoto
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, University of Electro-Communications, Grant-in-Aid for Scientific Research (B), We studied the quantum reflection of the metastable helium atoms on a flat polished silicon surface. We measured the reflectivity as a function of the normal incident velocity component between 3 and 30 cm/s, and confirm that on a flat surface the reflection of atoms is caused by the attractive van der Waals potential. In our case the atoms are mainly reflected in a region where the retardation effect leads to a potential of the approximate form, U(z)=-C_4/z^4 where z is the distance from the surface. We also studied the reflection and diffraction on surface structures consisting of parallel narrow ridges. The structure consists of wall-like ridges at a distance of L=5μm and with a width at the top of l=100nm. We observed on this structure an increase of the reflectivity by two orders of magnitude, exceeding 10% for normal incident velocities below about 25cm/s. At grazing incidence even fast atoms of 100m/s can be reflected very efficiently at such a surface structure. In order to quantitatively describe our data, we have developed a theoretical description of the reflection and scattering of atomic waves from our surface structures. As a first approximation we can assume that the van der Waals constant is reduced by a factor l/L, where l is the size at the top of the ridges and L the distance between the ridges. The reflectivity on the ridges structures then follows immediately from the scaling law of the quantum reflection. Deviations appear when the ratio l/L is very small. In the limiting case of l/L→0, i.e. of idealized thin ridges, a new interesting effect can be observed: The atomic wave is reflected due to the Fresnel diffraction at the array of ridges., 16340116
2004 - 2006

Study of coherence tomography based on optical frequency comb
KUROKAWA Takashi; TANAKA Yosuke; SHIODA Tatsutoshi; TAKEDA Mitsuo
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Tokyo University of Agriculture and Technology, Grant-in-Aid for Scientific Research (B), A range of techniques, including coherence scanning microscopy, three-dimensional sensing by coherence radar, and scanning white-light interferometry, have been developed for simultaneous measurement of the three-dimensional step height of discontinuous objects and tomographic imaging. These techniques, however, require mechanical scanning with a piezoelectric transducer or a precision translator. Spectral interferometry, on the other hand, potentially offers a powerful means for high-speed absolute threedimensional shape measurement of objects without moving mechanical parts. The practical applicability of such methods, however, remains limited due to the high cost of tunable lasers with sufficiently wide range (e.g., external cavity laser diodes and dye lasers) and the slow speed of data acquisition because of the large number of calculations in the Fourier transform. As an alternative interferometry-based approach, synthesis of the coherence functions has been reported to be suitable for distance measurements. This method involves pseudo-frequency comb generation by frequency modulation of a laser diode. Yet this method is not suitable for surface profilometry because the frequency-comb interval is limited to the order of megahertz. In this Letter, a novel frequency comb-based interferometry technique for profilometry and tomography is proposed. The optical frequency comb employed by this method can be adjusted simply, allowing interferometry to be performed at frequency intervals of up to gigahertz order. The method is therefore suitable for measurement of absolute distances of several micrometers to several meters without the need for mechanical movement. Step-height measurement with 9 μm accuracy was successfully performed by sweeping the comb interval frequency. Thickness measurement of a glass plate was also demonstrated. This profilometry method is expected to be useful for both surface profilometry and tomography., 16360027
2004 - 2005

New Sensing Techniques Using Spatio-temporal Dynamics of Phase Singularities in Scattered Random Optical Fields : A Basic Research
TAKEDA Mitsuo; MIYAMOTO Yoko
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (B), The purpose of this research project is to establish the basis of a new sensing technique for high-precision displacement measurement based on spatio-temporal dynamics of phase singularities in random optical fields. Because the proposed technique uses phase singularities as position markers imbedded on the surface of an object and traces the movement of the individual phase singularities, it can measure non-uniform displacement fields including rotation and scale changes, which has not been possible by conventional correlation techniques. The main achievements are summarized as in the following : 1.The generation of the pseudo-phase singularities from the complex analytic signal of a random pattern has been proposed, which enabled the use of pseudo-phase information without recourse to interferometry. 2.Displacement measurement with nanometric spatial resolution has been achieved by use of the phase singularities in the pseudo-phase distribution. 3.Measurement of large non-uniform displacements and deformations has been successfully demonstrated by use of the information about the local structure of phase singularities. 4.Phase singularities in a coherence function have been observed for the first time by experiment. Integrating all the above results, a new displacement-sensing system was developed that makes use of the phase singularities in the analytic signal of a random texture of the object and applied to the measurement of biological samples., 15360026
2003 - 2005

Optical measurement technology and application using two photon absorption (TPA) on an image sensor
KUROKAWA Takashi; TAKEDA Mitsuo; TSUDA Hiroyuki; TANAKA Yosuke
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Tokyo University Of Agriculture and Technology, Grant-in-Aid for Scientific Research (B), In normal sense, Si photodiode (Si-PD) is not sensitive to near infrared light because a band-gap of the Si crystal is generally wider than the energy of infrared light. Otherwise, in case that the Si-PD is exposed to extremely strong laser light, electric carriers are induced in proportional to the square of incident power of light according to two-photon absorption (TPA) process. By using this TPA technique, it is developed to observe an intensity correlation between two optical microwaves and between ultra-short optical pulses. The goal of this project was to progress a novel tomography with a dynamic range wider than mm to several 10mm, which is difficult to achieve with normal interferometric measurements. In 2002 fiscal year, a basic system of tomography had been investigated. As a first step, the property of the TPA process on the Si-APD (Si avalanche photodiode) was evaluated with an optical microwave by measuring an optical pass difference of two fibers in optical fiber interferometer. In order to remove noise caused by interference of carrier lights, the lights from two different optical passes, which consist of PM fibers, were combined at a right angle condition. The result proved that 1m and 2m optical pass differences were detected with 3x10^<-5> of measurement accuracy. In 2003 fiscal year, temperature dependence of output property of TPA had been studied in a viewpoint to make the measurement accuracy better. It was confirmed that the square property of the TPA process was appeared even by not only a relatively weak intensity light but also relatively strong incident light which gave intensity saturation under the condition without temperature control. Moreover, it was also confirmed to enable to measure intensity correlation without interference of carrier components independent on any polarization condition, which was obtained with beat optical microwave from two different lights at wavelength. Measurement accuracy was decided as 10^<-5>. In the other side, we also demonstrated a novel waveform measurement system of ultra-short optical pulses. Two polarization directions of divided incident lights were set at a right angle condition in order to avoid making two incident lights interfered, and was lead to an image sensor at slightly different incident angle to get auto-correlation of the pulses. In principle with this system, only one-shot gives a pulse waveform. According to a result of the experiment, 40fs waveform of ultra-short optical pulse was successfully detected., 14350032
2002 - 2003

New Principle for Optical Tomography Based on Synthesis and Control of a Three-dimensional Spatial Coherence Function : A Basic Research
TAKEDA Mitsuo; MIYAMOTO Yoko
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (B), The purpose of this research project is to establish the basis of a fundamentally new technique for synthesis and control of spatial coherence function, which enables selective creation of high coherence between a pair of desired points in three-dimensional space. Because the proposed technique uses spatial (rather than temporal) coherence function of a quasi-monochromatic light source, it opens up a new avenue to optical coherence tomography that is completely free from the dispersion problems that are unavoidable in the existing techniques of low-coherence tomography. The main achievements are summarized as in the following : 1. A theory and a methodology for designing a source distribution that produces a desired distribution of a spatial coherence function in three-dimensional space were established. In particular, a new model of fringe formation was proposed that gives a clear and intuitive picture about the relation between the source shape and the three-dimensional coherence structure. 2. A new principle for the simultaneous sensing of the object distance and the local inclination of the object surface was proposed, and the validity of the principle was verified by experiment. 3. A new scheme of phase-shift technique based on a source shape modulation by means of a spatial light modulator was proposed and verified by experiment. The proposed scheme enables phase shift completely free from a mechanically moving component, such as a piezo-electric transducer or a precision stage. Integrating all the above results, a new sensing system was developed that successfully demonstrated the shape measurement of three-dimensional structure made of a set of standard gauge blocks., 13450029
2001 - 2002

Ultra fast optical signal processing using arrayed waveguide grating
KUROKAWA Takashi; TSUDA Hiroyuki; TAKEDA Mitsuo; TANAKA Yosuke
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Tokyo University of Agriculture and Technology, Grant-in-Aid for Scientific Research (B), Ultra-short optical pulse shaping based on time-space conversion has been widely demonstrated by using free-space optics with diffraction grating pairs and lenses. We have proposed time-to-space conversion optical signal processing using an arrayed waveguide grating. The arrayed-waveguide grating system has the advantages of a long time window, and well suites to handle subpico- to several picosecond pulses. Moreover, it is compact, compatible with fiber optics, and can be integrated with functional photonic devices. We introduce several applications of this technology to terabit communication systems, such as pulse shaping, dispersion comp ensation, and optical COM encoder and decoder. Furthermore, we proposed a novel method for measuring the waveform of short optical pulses, which uses two-photon absorption process hi a silicon image sensor. We confirmed that infrared ^ht images with 1550nm wavelength were successfully, captured by the image sensor. Then we constructed a Michelson interferometer with a tilted reference mirror for measuring autocorrelation wave forms of optical pulses instantaneously without scanning mechanism., 12450027
2000 - 2001

Development of a Microscopic 3-D Shape Measuring System Using Novel Liquid-Crystal Devices
TAKEDA Mitsuo; KUROKAWA Takashi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (B)., The purpose of this research project is to develop a new scheme of spectral interferometric microscopy that is free from mechanical moving components and can perform full-field 3-D shape measurement of microscopic objects with complex structures and height discontinuities exceeding the wavelength of light. The main accomplishments are summarized in the following : 1. Design and Numerical Evaluation of Liquid-Crystal Fabry-Perot Interferometers (LC-FPIs) LC-FPIs with an extended tunable range of 40nm in the near IR region (which is suitable for spectral interferometry in combination with a SLD) were designed, and their improved performances were predicted by numerical simulations. 2. Fabrication of LC-FPIs and Proposal of Their Tandem Use LC-FPIs were fabricated and their tandem use in spectral interferometry was proposed for effective improvement of the overall finesse value. 3. Design and Construction of Spectral Interferometric Microscope A spectral interferometric microscope based on the combined use of an LC-FPI and a SLD (super luminescent diode) was designed and constructed. 4. Development of Softwares for System Control and Data Acquisition Dedicated computer codes were developed for the wavelength tuning control of the LC-FPI that runs in synchronism to the fast image acquisition of the spectral interferograms. 5. Experimental Demonstration and Evaluation of the Performance of the Spectral Interference Microscope Sub-micron height resolution of the developed spectral interference microscope was demonstrated using a 3-D micro structure with 1μm and 11μm height steps fabricated on a silicon wafer., 11555012
1999 - 2000

Engineering Applications of Berry's Geometric Phase Information
TAKEDA Mitsuo; MIYAMOTO Yoko
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (B)., The purpose of this research project is to exploit Berry's geometric phase information for engineering applications. A novel polarization interference microscope was developed that can visualize local surface inclinations of a microscopic object as a geometric phase image called a photon spin-redirection phase image. The main accomplishments are summarized in the following : 1. Experimental Detection of Photon Spin-redirection Phase Photon spin-redirection phase was detected by interferometry using circularly polarized light passing through non-planar optical paths, and its relation to the history of the beam propagation direction changes was experimentally clarified. 2. Development of Efficient Algorithm and Its Computer Code for Evaluation of Berry's Phase An efficient algorithm and computer code were developed for unified analysis and evaluation of spin-redirection and Pancharatnam phases for a beam propagating in a complex optical system. 3. Establishment of Technique for Separation of Berry Phase from Dynamical Phase A new technique of differential polarization interferometry was developed that enables selective detection of Berry phase by eliminating dynamical phase. 4. Construction and Experimental Demonstration of Berry Phase Interference Microscope An experimental system was constructed and the validity of the proposed technique was demonstrated by visualizing Berry phase introduced by local surface inclinations of 3-D micro structures on a Si wafer., 11450027
1999 - 2000

3次元微細構造の干渉計測におけるトポロジー的位相に関する研究
武田 光夫; TAVROV A. V.
日本学術振興会, 科学研究費助成事業, 電気通信大学, 特別研究員奨励費, 97F00332
1998 - 1999

Spatial Frequency Multiplex Heterodyne Technique for Absolute Measurement of Instantaneous Phase Distribution, and Its Applications
TAKEDA Mitsuo; MIYAMOTO Yoko
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (C), The purpose of this research project is to develop a new scheme of heterodyne profilometry that can perform the instantaneous measurement of the absolute phase distribution of an object with large height discontinuities and/or surface isolations. The main accomplishments are summarized in the following : 1. Invention of Spatial Frequency Multiplex and Scan Method for Absolute Phase Measurement As an alternative to the conventional temporal frequency scan method using a frequency tunable light source, a spatial frequency scan method was proposed for the absolute phase measurement. By means of spatial frequency multiplexing, the proposed technique can determine the absolute phase from a single fringe pattern, which makes possible the measurement of instantaneous phase distribution. 2. Clarification of the Relation between the Temporal and Spatial Frequency Scan Methods A unified theory was given to the basic principles of the various absolute phase measurement technique using temporal and spatial frequency scanning methods. 3. Development of New Phase Unwrapping Algorithm A new phase unwrapping algorithm that eliminates phase singular points was developed and experimentally verified. 4. Experimental Demonstration of the Instantaneous Shape Measurement of Objects in Dynamic Motion An experimental system was constructed and the validity of the proposed spatial frequency multiplex and scan method was demonstrated for objects in fast motion., 09650043
1997 - 1998

多次元波動場の位相接続技術の基礎研究
竹田 光夫
日本学術振興会, 科学研究費助成事業, 電気通信大学, 一般研究(C), 多次元光ヘテロダイン計測法は,干渉縞のように空間的に位相変調された「疑似周期パターン」の位相分布から測定対象の物理情報を高い分解能で抽出するための基本手段となっている.しかし,測定対象のダイナミックレンジが大きくて,位相値に換算して2πをこえると(-π,π]の主値の間に折り畳まれて位相分布に2πの不連続段差を生じる.そのため,折り畳みにより生じた不連続段差を取り除き元の位相分布を復元する位相接続法が必要とする.本研究では,干渉縞にノイズを含むスペックル干渉計測のように,従来の位相接続法が適用できない悪条件下の多次元ヘテロダイン計測により得られた位相データを接続するための新しい位相接続の基礎原理を提案し,それを現実の計測データに適用してその有効性を実験的に検証した.その具体的な内容は以下の通りである. 1.相互振幅情報を利用した位相接続法(相互振幅最大木法)の提案 大きなノイズの存在する場合,従来法では(-π,π]に折り畳まれた位相分布をどの画素から順に位相接続していくかの接続経路の選択により全く異なる位相分布が得られてしまう.そこで,本研究では,正しい位相分布にできるだけ近い結果を与える位相接続経路の選択するための新戦略として,これまで捨てられていた振幅情報を用いることにした.まず,疑似周期パターンの振幅の大きなところは干渉縞でいうと縞のコントラストが高く位相の計測値の信頼性が高いということに着目し,隣接する画素間の位相計測値の相互信頼度の測度として「相互振幅」という新しい概念を導入した.そして,「相互振幅」の大小により画素間の位相計測値の相互信頼度の優劣のランクづけをして信頼度の高い画素間を優先的に接続するように位相接続経路を選択する新しい位相接続法を提案した.また,それを実現するための具体的なアルゴリズムが画素を節とし「相互振幅」を枝の重みとする平面グラフの最大木探索問題となることを示した. 2.位相情報を利用した既存の方法との比較による優位性の実証 相互振幅情報を利用した我々の方法と比較すべき既存の方法として,計算効率と位相接続能力がともに優れているとして国際的に知られている「位相差最小木法」を選んだ.これは,隣接する画素間の「位相差」を画素間の位相計測値の相互信頼度の測度とするもので,画素を節とし「位相差」枝の重みとするグラフの最小木を構成しそれを位相接続経路とする方法である.物体自身に不連続位相を持つ3次元立体計測の実験とスペックルノイズの干渉計測の計算機シミュレーションの両方により悪条件下の位相接続能力を比較した.その結果,われわれの提案した方法の優位性が検証された., 07650048
1995 - 1995

フーリェ縞解析法による結晶の原子配列歪のサブ・オングストローム計測
武田 光夫
日本学術振興会, 科学研究費助成事業, 電気通信大学, 一般研究(B), 最近,透過電子顕微鏡(TEM)や走査トンネル顕微鏡(STM)の技術進歩はめざましく,これらの高分解能顕微鏡により結晶の原子配列を直接観測することができるようになり,転位や格子間隔の拡縮や超格子歪みなどの結晶中の空間配列の乱れの分布の精密測定への期待が高まってきている.このような背景のもとで,本研究は,我々がこれまで光応用計測の分野において開発してきた画像処理技術を原子スケールの顕微鏡像の解析に応用したものであり,その具体的な内容は以下の通りである. 1.結晶格子歪みの空間周波数ヘテロダイン検出法の考案 原子配列に乱れのある結晶の疑似周期的な格子像の歪の形状と,波面に乱れを持つ光波にティルトを与えて干渉させた時に生じる位相変調された空間キャリア干渉縞の歪の形状との間の類似性に着目し,TEMやSTMにより得られる原子配列像を空間キャリア周波数をもつ干渉縞とみなして空間周波数ヘテロダイン検出することにより,非常に高い分解能で精密計測する方法の基本原理を考案した. 2.フーリェ変換縞解析法による格子歪分布計測の原理の有効性の検証 我々が光波の干渉縞解析のために開発したフーリェ変換縞解析法が結晶格子歪の空間周波数ヘテロダイン検出のための具体的手段として有効であることをシミュレーションと実験により検証した. 1.1 計算機シミュレーションにより作成した既知の結晶格子像を用いた精度の確認 計算機内部で既知の格子歪分布値をもつ種々の結晶格子像を数値的に作成し,それらを空間キャリア干渉縞と見なしてフーリェ変換法により原子の基準位置からの変位分布を求め,数値的に与えた既知の変位分布と比較することにより格子間隔の1/30以下の格子歪の検出の可能性を確認した. 1.2 実際の結晶を対象とした転位や格子間隔の拡縮などの計測実験 シリコン(Si)や金(Au)の結晶の刃状転位のように格子の歪分布がの概形が知られている試料のTEM像を対象に実験をおこない格子の微小変位分布の検出することにより原理の有効性を実証した., 06452129
1994 - 1994

多次元情報画像処理
大塚 喜弘; 伊東 一良; 藤原 裕文; 武田 光夫; 小川 英光; 稲場 文男; 辻内 順平
日本学術振興会, 科学研究費助成事業, 北海道大学, 重点領域研究, 直交2周波局部発振光を有する時空間広帯域光ヘテロダイン偏光計を試作し、動的複屈折分布応答の時空間分布を画像表示するとともに、当該偏光計の有用性を実証した。 生体からの超微弱発光現象としてのバイオフォトンの2次元発光パターン情報の高感度計測・処理法の研究開発を行い、新しい画像を得るとともに、新知見を得ることに成功した。また、この現象の量子光学的特性の解明を試み、検討を行った。 瞬時の分光画像計測を目的とする並列多重フーリエ分光映像法を開発し、その有用性を確認した。本法では、レンズアレイを用いて物体の多重像を作り、それぞれの像に異なる光路差を与えるものであり、高速回転物体の瞬時の分光画像計測に成功した。 セルオートマトン、多変量のファジー論理回路、乗算のようなディジタル数値演算を光デバイスによって実現する方法を開発するとともに、画像処理をカスケート接続された光デバイスによって実現する方法を開発した。 干渉計の縞画像走査における時空間縞縮退現象を利用することにより、物理的に実在しない波動場でありながら、あたかも実在する波動によって生ずる干渉縞のごとき「仮想波面」を発生する原理を提案し、その実証実験により有用性を示した。 時定数の異なる2種類の有機色素を高分子に分散させた膜を作成し、互いに直交偏光状態にある位相共役波の発生に成功した。これを用いて、入力画像の中から動画像のみを抽出することを可能とした。 BSO結晶を用いた結合フーリエ変換相関器を開発し、高速画像相関演算を行った。結晶内の光強度不均一性を改善することにより、正しい相関関数の得られることを示した。, 04228101
1993 - 1993

Mamalian-like neural networks for dynamic information processing and its learning algorithm
TAKAHASHI Haruhisa; TAKEDA Mitsuo; TOMITA Etsuji
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for General Scientific Research (C), (1)It is mathematically investigated as to what kind of internal representations are separable by a single output unit of a three layr feednext neural network. A topologically described necessary and sufficient condition is shown for partitions of input spaces to be classified by the output unit. Then an efficient algorithm is proposed for checking if a given partition of the input space is resulted in linear separation at the output unit. (2)(3)These papers improves the sample complexity needed for reliable generalization in the PAC learnability in machine learning. By introducing an ill-posed learning algorithm which gives error worse over the candidates of network realizarions that are attained by minimizing empirical error, we can refine the order of the sample complexity, whereas the previous methods seek the uniform error over the whole configuration space. Essential VC dimension of concept classes, which is smaller than or equal to the number of modifiable system parameters, is introduced for calculating the generalization error instead of the traditional VC dimension analysis. Noisy learning is also treated. (4)In this paper we propose a very simple recurrent neural network(VSRN)architecture which is a three-layr network and contains only self-loop recurrent connections in the hidden layr. The role of the recurrent connection is explained by the network dynamic and its function will be acquired by learning from finite examples like a mamalian action. Through the learning process some characteristic functions observed in the mamalian auditory systems are found automatically acquired by the network. These contain on-neuron, off-neuron and on-off-neuron. This architecture can perform phoneme spotting in real time by utilizing these characteristic functions. Some simulation experiments are done to investigate the recognition performance., 04805032
1992 - 1993

高密度に集績化された光論理デバイス用アレー・イルミネータの研究
久保田 敏弘; 武田 光夫
日本学術振興会, 科学研究費助成事業, 京都工芸繊維大学, 一般研究(C), 我々はグレイティングカプラを使った光導波路型のコンパクトなアレー・イルミネータを提案し、その原理の確認と光の利用効率について解析を行なってきた。本研究はその基礎の上にたって、光導波路型の特長に自由空間の伝播を利用する特長を併せもった、高密度に集積化された高効率のイルミネータを設計・作製することを目的としている。これを達成するために、以下の研究を行なった。 (1)グレイティングカプラの理論解析 グレイティングの形状の回折効率依存性を理論的に求めた。溝の形状が正弦状であるとした場合、溝の深さが小さい範囲では2次関数的に変化する。-1次項(空気側)の回折効率の最大値は、溝の深さ0.38μmで0.315である。また-2次項(戻り光)は溝の深さ0.85μm付近で0.98程度まで達することがわかった。 (2)グレイティングカプラの作製と性能評価 2光束干渉法によりフォトレジストに干渉縞を記録し、グレイティングカプラを作製した。回折効率を測定し、同時にその断面の電子顕微鏡観察を行なって溝の深さを読み取り、理論解析の結果を確かめた。全次数の回折効率の和を求めた結果は0.85程度であり、散乱および吸収は数%と低いことがわかった。 (3)アレー・イルミネータの作製 これらの結果に基づいて、均一のビームの得られるアレー・イルミネータを設計した。ビームの数は10本と20本である。実験によって露光量と回折効率の関係を求め、ビームの出射位置によって露光量を変えることにより回折効率を制御し、10×20本のほぼ均一なビームの得られるアレー・イルミネータを作製することができた。これらの成果を応用物理学会などに発表した。, 04650040
1992 - 1992

時空間スペックルグラムの周波数解析による立体計測法の研究
武田 光夫
日本学術振興会, 科学研究費助成事業, 電気通信大学, 一般研究(C), 従来の代表的な非接触立体計測法であるモアレ法は,連続で滑らかな形状の物体に対しては有効であるが,モアレ縞の縞次数に飛びが生じるような強い段差や不連続性をもつ物体は測定できない.また,ステレオ視差法は,ステレオ画像の対応点決定の計算量が多いという問題に加えて,反射率が一様な表面を持つ物体の場合には照合する特徴点が得られないという問題がある.本研究では,従来の立体計測法が対応できないこれらの物体の形状を非接触で自動計測することを目的として以下のように新しい立体計測法の原理を考案し実験によりその有効性を実証した. (1)従来のモアレ法やステレオ視差法のような基線を媒介とした3角測量法的な原理に代わるものとして,光波干渉を利用した直接的な2点間測距の原理を採用し,それを被測定物体上の全点に対して多点同時並列的に実現するような新しい方法の原理を考案した.粗面物体を測定できるようにスペックル干渉計と類似な光学系を用いたが,スペックル干渉計測法は物体の元の位置・形状からの相対的な変位・変形を測る,いわば差分量△hの計測技術であったのに対して,本研究の方法は,位置・形状そのもの,すなわちh自身の計測技術である点にその特長と新規性がある. (2)光源に波長走査可能な半導体レーザを用い,干渉計のなかにテレセントリック結像系を導入し,物体をイメージセンサ上に共役結像することにより,粗面物体上の各点からの散乱光を再統合して各点が互いに独立な干渉光路をもつ(画素と同数の)超多チャンネル測距干渉計が実現できることを見いだし,上述の原理に基づく立体計測システムを構築した. (3)段差のある針状物体や深穴の形状を非接触自動測定することにより原利の有効性を実験的に確認した., 04650035
1992 - 1992

多次元情報画像処理
大塚 喜弘; 藤原 裕文; 辻内 順平; 武田 光夫; 小川 英光; 稲場 文男
日本学術振興会, 科学研究費助成事業, 北海道大学, 重点領域研究, 直交2成分を有する参照光を干渉計に導入し、新しい偏光干渉計を試作した。これにより、光波の偏光状態の時空間分布のマッピングが可能なことを示すとともに、光弾性材料の新しい研究方法を提示した。 液晶偏光干渉計を開発し、分光映像装置の入射光量を格段に増加することができた。これにより、デ-タ圧縮された分光画像の高速空間領域分割の有用性が確認された。 コヒ-レント光検出・画像計測法を開発し、ガン組織などの生体試料の断層画像に関する基礎研究を行なうとともに、被測定生体対象の位相情報検出のための光へテロダイン計測システムの構成と基礎実験を行った。 ニュ-ラルネット学習において、過学習の生ずる条件と過学習を防止する方法を明らかにした。また、バックプロパゲ-ションの汎化能力を解明し、作用素論的枠組から最適汎化ニュ-ラルネットの理論を構築した。 時空間融合の位相情報の多重化と実現方法を提案し、予備実験によりその有効性を確認した。さらに、位相共役増幅機講により生成される光波の時空間特性とニュ-ラルネットの類似性を見出した。 BSO結晶を用いてJoint Transform Correlationの手法により、光学的連想メモリ-の実験を行った。書き込みをアルゴンレ-ザ-で、読み出しをHeーNeレ-ザ-で行って、結晶の特性との関連を調ベた。 キサンテン系やアゾ系の有機色素膜を用いて、2次元画像の実時間演算を行う際に問題となる位相共役波発生効率、ホログラフィ成分の時間変動、自己回折効率、並びに、複屈折差などに関する基礎デ-タを得た。, 03244101
1991 - 1991

Development and Evaluations of Efficient Algorithms for Finding a Maximum Clique Based upon Nueral Networks
TOMITA Etsuji; YOKOMORI Takashi; TAKEDA Mitsuo; TAKAHASHI Haruhisa
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The Univesity of Electro-Communications, Grant-in-Aid for General Scientific Research (C), 1. Given a graph of n nodes, we have devised an 0(n^3)-time algorithm NMCLIQ for finding a near-maximum clique. We have confirmed in experiments for several graphs with up to 400 nodes that the orders of maximal c)iques found by NMCLIQ are almost more than 85% of the maximum orders. 2. We have developed an 0(n^3)-time algorithm RACLIQUE for finding a near-maximum clique in a given graph of n nodes. While the algorithm is based upon the notion of Boltzmann machines, it employs no simulated annealing and hence is simple to control its execution. We have confirmed in experiments for several random and nonrandom graphs with up to 400 nodes that almost optimum solutions can be found very efficiently. In addition, further improvements and variations are considered and verified to be very useful. 3. We have devised two non-searching algorithms for the n-queen problem which are based upon the former resuit for finding a near-maximum clique. We have confirmed in experiments for up to 50, 000 queens that they are extremly efficient., 02650261
1990 - 1991

Development and Applications of Learning Algorithms for Neural Networks
TAKAHASHI Haruhisa; TAKEDA Mitsuo; TOMITA Etsuji
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Elector-Communications, Grant-in-Aid for General Scientific Research (C), (1)It is mathematically investigated as to what kind of internal representations are separable. by a single output unit of a three layer feed next neural network. A topologically described necessary and sufficient condition is shown for partitions of input spaces to be classified by the output unit. Then an efficient algorithm is proposed for checking if a given partition of the input space is resulted in linear separation at the output unit. (2)We propose in this paper a new recurrent propagation learning algorithm. A biologically plausible neurodynamics is derived from which a quick algorithm to compute fixed points is obtained applying an approximation of stochastic process. The sensitivity of the networks is also obtained and from that a new recurrent propagation teaming algorithm is proposed. Our algorithm can run 10 times more quick over the previous ones. Furthermore, some unstable problems in recurrent propagation are overcome. Some simulation results are given to compare the recurrent propagations with Backpropagation and Mean Field Networks. (3)Associative memory is realized by the, recurrent propagation Teaming rule as equilibrium states ; of the network. Since the number of hidden units can be increased unrestrictedly, the information capacity can be sufficiently large. This is the main advantage of the proposed network compared with previous ones that have no hidden units. Some printer fonts are used for patterns to be memorized in our experiments. The data show that the more the number of hidden units, the more the rate of memorization and correct association. (4)A new teaming network is proposed in this chapter. Although the Backpropagation Teaming method has been succeeded in many applications, some difficulties exists, such as the local minimal problem, too long Teaming Teaming times, and capability of approximation to continuous mappings. We combine the competitive learning and supervised teaming methods in order to approximate continuous mappings. Some simulation results show that the proposed teaming algorithm works extremely more quick than the Back Propagation method and has reliable convergence property., 02650235
1990 - 1991

Digital Optical Processing System Using Holograms
OHZU Hitoshi; MURAOKA Youichi; TAKEDA Mitsuo
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, WASEDA University, Grant-in-Aid for General Scientific Research (B), A digital optical processing system using holograms is studied. Optical digital circuits consist of holographic logic operations are investigated and demonstrated. Devices for practical use are proposed and the experimental results are shown. Holographic logic operations have parallelism, however, can perform only one kind of operations. Since different kinds of logic operations are required in order to construct digital circuits, local variable logic operations, which can perform different operations at different positions, are proposed. The local variable logic operations are combined in order to construct holographic logic modules. Optical digital circuits are constructed by interconnecting the modules regularly. High diffraction efficiency holograms are important, since the power consumption of the optical computing systems depends on the efficiency. In this study, ROACHs are introduced, which have high diffraction efficiency and have high accuracy of amplitude and phase distribution. The diffraction efficiency of 10% is achieved by use of the holograms. The ROACH has two layers for amplitude modulation and phase modulation, each layer for each modulation. In this study, compensation in the amplitude modulation layer is found to be required, since the amplitude modulation occurs in the phase modulation layer. High speed spatial light modulators are also important in order to construct the digital optical computers. In this study, optical bistable devices, which have high speed nonlinear effects, are employed as the spatial light modulators. Researches of two dimensional characteristic of the optical bistable devices have not been performed. The MTF of the devices are measured, and resolution of 80 lines/mm is obtained at the contrast of 50%. It means that one device consists of array of 13mum X 13mum nonlinear elements. The switching power of each element is 0.8mW and the switching time is 80mus., 02455025
1990 - 1991

非線形光波増幅機構を用いた複素ニュ-ロン場の生成に関する基礎研究
武田 光夫
日本学術振興会, 科学研究費助成事業, 電気通信大学, 一般研究(B), 本研究では波動場によって形成される「複素ニュ-ロン場」という新しい概念を提案し,そのダイナミックスの基本的な性質を明らかにした.その具体的な成果は以下の通りである. <1.光波動場の物理現象とニュ-ラルネットの対応関係の明確化>___ー 振幅と位相の情報を持つ複素波動場をニュ-ロンの複素状態変数に対応させると,1点から発した光波が他の1点に到達する間にうける振幅の減衰と位相変化を複素シナプシス結合荷重に対応させることができることを示した.また,光波伝播の相反性により複素光波動場の形成する複素ニュ-ロン場の複素シナプシス荷重は一般に対称性を持つことを明らかにした. <2.複素ニュ-ロン場のエネルギ-関数の発見とその存在条件の提示>___ー 複素シナプシス結合荷重が対称性を持つ場合とエルミ-ト対称性を持つ複素ニュ-ロン場に対しては,従来の実数ニュ-ラルネットと類似のホップフィ-ルド・エネルギ-関数が存在することを見いだした.また,それらのエネルギ-関数を持つ複素ニュ-ロン場を複素光波動場で実現するには位相共役波発生機構の存在が不可欠な条件であることを明らかにした. <3.実験によるモデルの妥当性の検討>___ー 複素ニュ-ロン場の生成システムとして縮退4波混合による位相共役波発生の際の光増幅機能と球面鏡を組み合わせた光フィ-ドバック系を提案し,その複素波動場の振舞いを計算機シミュレ-ションによる実験で調べ,提案したエネルギ-関数が確かに時間とともに単調減少し,波動場が最終的に光共振器の固有モ-ドの1つに収斂して行くことを確認した.実際のレ-ザ-のポンプ光からエネルギ-供給を受けたBaTiO_3結晶の持つ非線形光波増幅機能による実験は現在進行中であり,我々の予見したエネルギ-関数の振舞いをまだ直接確認するには至っていないが,近くその性質を明らかにできるものと期待している., 02452085
1990 - 1990

Basic Research on Three-Dimensional Free-Space Optical Interconnects Using Holographic Optical Elements
TAKEDA Mitsuo; KUBOTA Toshihiro
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, UNIVERSITY OF ELECTRO-COMMUNICATIONS, Grant-in-Aid for General Scientific Research (B), The research was carried out with the aim of developing a novel holographic element for three-dimensional free-space optical interconnects, and the following results have been obtained: 1. Proposal of the basic principle of an array illuminator We have proposed a new scheme for implementing array illuminators. which are used to distribute optical power to an array of optical logic gates or bistable devices that require optical power supplies. The scheme is based on integrated optics, and has the advantage that the system becomes compact and that alignment problems can be greatly alleviated. 2. Design for an array illuminator using a grating coupler, and establishment of a theory to predict the performance of the illuminator We have proposed a design principle for an array illuminator using a grating coupler. We have shown that it is possible to design an array illuminator that generate uniform beams with 100% power efficiency. We have also shown that the product of the number of beams and the beam compression ratio becomes a constant, which sets the fundamental limitation of the scheme proposed. 3. Fabrication of array illuminators and experimental demonstrations of the validity of the principfe We first fabricated one-dimensional array illuminators based on the proposed principle. Then, we made a two-dimensional array illuminator by combining the two one-dimensional array illuminators. By introducing a laser beam into the array illuminator, we have experimentally demonstrated that a two-dimensional array beams can be obtained., 63460065
1988 - 1989

光強度輸送方程式に基づく位相センシングの研究
武田 光夫
日本学術振興会, 科学研究費助成事業, 電気通信大学, 一般研究(C), 干渉計測の手段を用いることができない状態下で強度情報だけから光波の位相を求める問題は位相回復問題と呼ばれ, 光学のみならずX線や電子線のような低コヒーレンス波動場の計測の基礎となる非常に重要な問題である. 位相回復問題に対する従来の研究は, 強度の非負性を拘束条件とした反復法または複素平面場上の解析接続などの数学的手法に基づくものが主流であるが, ノイズの影響を受けやすいことや解の一意性が保証されない点が実用化の障害になっていて, 多くはコンピュータシミュレーションによる原理の確認に留まっていた. そこで, 本研究では, 光強度だけでなく光強度の空間的微係数をあわせて計測することにより, 簡単な計算で解を一意に決定することができる実用性のある手法を開発し, その有効性を実験により確認した. その具体的な内容は以下の通りである. 1.波動方程式から出発して, 光強度と位相との関係を直接表現するような形式の光強度輸送方程式を導き, 境界条件として強度とその空間的微係数を与えることにより位相を一意に求めることができる新しい測定原理を提案し, その計算のためのアルゴリズムを明らかにした. 2.2次元光強度分布とその空間的微係数を測定するために, 軽量CCDカメラを精密微動装置上に搭載し前後に微小移動させてフレームメモリに光強度分布を蓄えるシステムを試作し, 空間的にインコヒーレントな純単色光源で照明された位相物体の位相を計測する実験を行い有効性を実証した. 従来の方法は光強度のみから位相を決定しようとしたのに対し, 本方法はさらに光強度の空間的微係数をあわせて測定し, より多くの情報を利用してその分だけ数学的計算と原理の簡単化をはかろうとする点を特色とする. 本研究の成果は, コヒーレンスの高い光源が得にくい電子線やX線の分野の位相計測への応用が期待できる., 62550026
1987 - 1987

Homomorphic Filtering の光計測への応用
武田 光夫
日本学術振興会, 科学研究費助成事業, 電気通信大学, 一般研究(C), 58550028
1983 - 1983

透過波面計測装置及び透過波面計測方法
Patent right, 小野 明, 武田 光夫, 大谷 幸利, 谷田貝 豊彦, 特願2014-169226, Date applied: 22 Aug. 2014, 国立大学法人宇都宮大学, 特開2016-045070, Date announced: 04 Apr. 2016,

撮像装置および画像処理方法
Patent right, 長井 健太郎, 武田 光夫, 特願2011-248717, Date applied: 14 Nov. 2011, キヤノン株式会社, 特開2013-102951, Date announced: 30 May 2013, 特許第5868132号, Date issued: 15 Jan. 2016,

透過波面計測装置及び透過波面計測方法
Patent right, 喜入 朋宏, 武田 光夫, 谷田貝 豊彦, 小野 明, 特願2013-174970, Date applied: 26 Aug. 2013, 国立大学法人宇都宮大学, 特開2015-042967, Date announced: 05 Mar. 2015,

撮像装置および画像処理方法
Patent right, 長井 健太郎, 武田 光夫, 特願2011-248717, Date applied: 14 Nov. 2011, キヤノン株式会社, 国立大学法人電気通信大学, 特開2013-102951, Date announced: 30 May 2013,

空間モード同期レーザ
Patent right, 黒川 隆志, 武田 光夫, 特願2012-011416, Date applied: 23 Jan. 2012, 国立大学法人東京農工大学, 国立大学法人電気通信大学, 特開2012-080134, Date announced: 19 Apr. 2012,

位相特異点検出方法、及び、位相特異点検出装置、並びに、プログラム
Patent right, 武田 光夫, ワン ウェイ, 横関 友亮, 石島 玲華, 特願2006-117103, Date applied: 20 Apr. 2006, 国立大学法人電気通信大学, 特開2007-292468, Date announced: 08 Nov. 2007, 特許第4820998号, Date issued: 16 Sep. 2011,

光波干渉測定装置
Patent right, 葛▼ 宗濤, 武田 光夫, 特願2007-030777, Date applied: 09 Feb. 2007, 富士フイルム株式会社, 国立大学法人電気通信大学, 特開2008-196901, Date announced: 28 Aug. 2008, 特許第4810693号, Date issued: 02 Sep. 2011,

三次元形状測定装置
Patent right, ミハル パヴロフスキー, 武田 光夫, 木村 高啓, 特願2007-292911, Date applied: 12 Nov. 2007, アンリツ株式会社, 国立大学法人電気通信大学, 特開2009-121828, Date announced: 04 Jun. 2009, 特許第4756024号, Date issued: 03 Jun. 2011,

生成装置および方法、測定装置および方法、並びにプログラム
Patent right, 段 志輝, 武田 光夫, 特願2005-094689, Date applied: 29 Mar. 2005, 国立大学法人電気通信大学, 特開2006-275740, Date announced: 12 Oct. 2006, 特許第4701388号, Date issued: 18 Mar. 2011,

測定装置および方法、並びにプログラム
Patent right, 段 志輝, 武田 光夫, 特願2005-094688, Date applied: 29 Mar. 2005, 国立大学法人電気通信大学, 特開2006-275739, Date announced: 12 Oct. 2006, 特許第4701387号, Date issued: 18 Mar. 2011,

微小変位計測法及び装置
Patent right, 武田 光夫, 王 ▲うぇい▼, 石井 信生, 宮本 洋子, 特願2006-512596, Date applied: 22 Apr. 2005, 国立大学法人電気通信大学, 特許第4644819号, Date issued: 17 Dec. 2010,

三次元形状計測装置
Patent right, 武田 光夫, ミハル, エマニュエル, パヴロフスキー, 坂野 洋平, 特願2006-549056, Date applied: 22 Dec. 2005, 国立大学法人電気通信大学, 特許第4411441号, Date issued: 27 Nov. 2009,

変位検出方法、及び、変位検出装置、変位検出プログラム、並びに、位相特異点マッチング処理方法、位相特異点マッチング処理プログラム
Patent right, 武田 光夫, ワン ウェイ, 横関 友亮, 石島 玲華, チャオ ユー, 特願2007-556824, Date applied: 24 Jan. 2007, 国立大学法人電気通信大学, 特許第4385139号, Date issued: 09 Oct. 2009,

三次元形状測定装置
Patent right, ミハル パヴロフスキー, 武田 光夫, 木村 高啓, 特願2007-292911, Date applied: 12 Nov. 2007, アンリツ株式会社, 国立大学法人 電気通信大学, 特開2009-121828, Date announced: 04 Jun. 2009,

三次元形状測定装置
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光波干渉測定装置
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空間モード同期レーザ
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測定装置および方法、並びにプログラム
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生成装置および方法、測定装置および方法、並びにプログラム
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カメラ付き携帯型電話機
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三次元形状計測装置
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微小変位計測法及び装置
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光接続集積回路
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非接触形状測定方法
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3次元形状測定方法
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3次元形状測定方法
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3次元形状測定方法
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光導波路の製造方法
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非接触形状測定方法
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高集積光導波路
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光接続集積回路
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