MASAYUKI KATSURAGAWA
| Department of Engineering Science | Professor |
| Cluster III (Fundamental Science and Engineering) | Professor |
| Institute for Advanced Science | Professor |
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Paper
- Optimal design for wavelength conversion with a configuration of walk-off compensation in free space in the nanosecond pulsed regime
Chiaki Ohae; Kenji Hasegawa; Masato Nagano; Soma Tahara; Masayuki Katsuragawa
Optics Express, Optica Publishing Group, 31, 25, 41471-41471, 22 Nov. 2023, On the basis of standard wavelength conversion by the use of angular phase matching of nonlinear optical crystals arranged in free space, applicable to a wide range of wavelengths and laser intensities, we both numerically and experimentally present an optimal design for achieving near-full energy conversion while maintaining good TEM00 mode property of fundamental laser radiation in the nanosecond regime.
Scientific journal - Engineering nonlinear optical phenomena by arbitrarily manipulating the phase relationships among the relevant optical fields
W. Liu; C. Ohae; J. Zheng; S. Tahara; M. Suzuki; K. Minoshima; H. Ogawa; T. Takano; M. Katsuragawa
Communications Physics, Nature出版, 5, 179, Jun. 2022, Peer-reviwed
Scientific journal, English - 10 W injection-locked single-frequency continuous-wave titanium:sapphire laser
Tetsushi Takano; Hisashi Ogawa; Chiaki Ohae; Masayuki Katsuragawa
Optics Express, The Optical Society, 29, 5, 6927-6927, 01 Mar. 2021, Peer-reviwed
Scientific journal - Optical technology for arbitrarily manipulating amplitudes and phases of coaxially propagating highly discrete spectra
C. Zhang; K. Yoshii; D. Tregubov; C. Ohae; J. Zheng; M. Suzuki; K. Minoshima; M. Katsuragawa
Physical Review A, American Physical Society, 100, 5, 053836-1-053836-10, 18 Nov. 2019, Peer-reviwed
Scientific journal, English - Tailor-made Raman-resonant four-wave-mixing processes and their applications to optical devices
Masayuki Katsuragawa; Chiaki Ohae; Jian Zheng; Masaru Suzuki; Kaoru Minoshima
CLEO:2018, SI, FW4E.6, May 2018, Peer-reviwed
International conference proceedings, English - Continuous Generation of Ultrafast Arbitrary Optical Waveform with a Repetition Rate exceeding 100 THz
Chiaki Ohae; Trivikramarao Gavara; Kaoru Minoshima; Masayuki Katsuragawa
CLEO:2018, SI, JTh2A.159, May 2018, Peer-reviwed
International conference proceedings, English - Generation of 1.4-fs Ultrafast Single-Cycle Pulses with a Repetition Rate Exceeding 100 THz by Arbitrarily Manipulating Amplitude and Phase
CHUAN ZHANG; Kazumichi Yoshii; Dmitry Tregubov; Chiaki Ohae; Masaru Suzuki; Kaoru Minoshima; Masayuki Katsuragawa
CLEO:2018, SI, SF3N.3, May 2018, Peer-reviwed
International conference proceedings, English - Tailored Raman-resonant four-wave-mixing processes
C. Ohae; J. Zheng; K. Ito; M. Suzuki; K. Minoshima; M. Katsuragawa
Optics Express, OSA - The Optical Society, 26, 2, 1452-1460, 22 Jan. 2018, Peer-reviwed, Nonlinear optical processes are strongly dominated by phase relationships among electromagnetic fields involved. In this paper, we theoretically and experimentally show that in a Raman-resonant four-wave-mixing process, the first anti-Stokes and Stokes generations can be tailored in a variety of ways by manipulating the phase relationships among the relevant electromagnetic fields.
Scientific journal, English - Arbitrary manipulation of amplitude and phase of a set of highly discrete coherent spectra
Masayuki Katsuragawa; Kazumichi Yoshii
PHYSICAL REVIEW A, AMER PHYSICAL SOC, 95, 3, 033846-033846, Mar. 2017, Peer-reviwed, We describe the attractive optical nature of highly discrete coherent spectra. We show that the relative amplitude and phase of such spectra can be almost arbitrarily manipulated by simply placing three fundamental optical elements-namely, a waveplate, polarizer, and dispersive plate-on an optical axis and then controlling their thicknesses. We also describe the relevant physical mechanism. Furthermore, as a typical application of this optical nature, we demonstrate arbitrary optical waveform generation in a numerical experiment, and we discuss its limitations as an optical-wave manipulation technology and how we can overcome these limitations.
Scientific journal, English - Tailored nonlinear optical process by manipulating the relative phases among the relevant electromagnetic fields
C. Ohae; J. Zheng; K. Ito; M. Suzuki; K. Minoshima; M. Katsuragawa
Optics InfoBase Conference Papers, OSA - The Optical Society, 2017, 2017, We describe tailoring nonlinear optical process by manipulating the spectral phases among the relevant electromagnetic fields. We demonstrate, as a typical example, an efficient generation of Stokes or anti-Stokes component in the Raman-resonant four-wave-mixing process.
International conference proceedings, English - Ultrafast pulse train at a 125-THz repetition rate in the CW regime
C. Ohae; N. S. Suhaimi; T. Gavara; K. Nakagawa; F. L. Hong; K. Minoshima; M. Katsuragawa
Optics InfoBase Conference Papers, OSA - The Optical Society, 2017, 2017, We report on the synthesis of an ultrashort pulse train with a repetition rate of 125 THz by tailoring the phases and amplitudes of five phase-locked harmonics with an extremely-wide frequency spacing.
International conference proceedings, English - Arbitrary dual-frequency generation in Raman-resonant four-wave-mixing process
Jian Zheng; Masayuki Katsuragawa
Optics InfoBase Conference Papers, OSA - The Optical Society, 2017, 2017, Peer-reviwed, Arbitrary phase control leads to freely designable optical-frequency-conversion. As an example, we discuss arbitrarily-designable dual-frequency generation in a Raman-resonant four-wave-mixing process.
International conference proceedings, English - Generation of five phase-locked harmonics in the continuous wave regime and its potential application to arbitrary optical waveform synthesis
N. Sheeda Suhaimi; C. Ohae; T. Gavara; K. Nakagawa; F. -L. Hong; M. Katsuragawa
THIRD INTERNATIONAL CONFERENCE ON APPLICATIONS OF OPTICS AND PHOTONICS, SPIE-INT SOC OPTICAL ENGINEERING, 10453, 2017, Peer-reviwed, We have successfully generated a new broadband coherent light source in the continuous wave (CW) regime which is an ensemble of multi-harmonic radiations (2403, 1201, 801, 600 and 480 nm) by implementing a frequency dividing technology. The system is uniquely designed that all the harmonics are generated and propagate coaxially which gives the advantage of robustly maintaining the phase coherence among the harmonics. The highlight is its huge potential for the arbitrary optical waveform synthesis in the CW regime which has not been performed yet due to the limitation of the existing light source.
International conference proceedings, English - Dual-frequency injection-locked continuous-wave near-infrared laser
Trivikramarao Gavara; Takeru Ohashi; Yusuke Sasaki; Takuya Kawashima; Hiroaki Hamano; Ryo Yoshizaki; Yuki Fujimura; Kazumichi Yoshii; Chiaki Ohae; Masayuki Katsuragawa
Optics Letters, Optical Society of America, 41, 13, 2994-2997, Aug. 2016, Peer-reviwed
Scientific journal, English - Multiple-wavelength injection-locked continuous-wave titanium sapphire laser
Gavara Trivikramarao; Ohashi Takeru; Sasaki Yusuke; Kawashima Takuya; Hamano Hiroaki; Yoshizaki Ryo; Fujimura Yuki; Yoshii Kazumichi; Ohae Chiaki; Katsuragawa Masayuki
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, 71, 525-525, 2016,We report a multiple wavelength injection-locked continuous-wave Titanium sapphire laser. It consists of a Ti:sapphire ring laser as a power oscillator, two diode-lasers as seed lasers, and a high finesse master cavity as a frequency reference. Stable dual-wavelength injection-locked oscillation is achieved with a watt level output powers at both oscillating wavelengths.We show the single transverse and longitudinal mode characteristics, and power stability. Also, we demonstrate arbitrary selectivity of the two frequencies and flexible control of their relative powers.
Japanese - Generation and application of five phase-locked harmonics in the continuous wave regime
C. Ohae; S. Suhaimi; T. Gavara; K. Nakagawa; F. -L. Hong; K. Minoshima; M. Katsuragawa
2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), IEEE, 2016, Peer-reviwed, We report generation of five phase-locked harmonics with an exact integer frequency-ratio of 1:2:3:4:5 in the continuous-wave regime by implementing a divide-by-three optical-frequency division technology in the harmonic generation process.
International conference proceedings, English - Generation of five phase-locked harmonics by implementing a divide-by-three optical frequency divider
Nurul Sheeda Suhaimi; Chiaki Ohae; Trivikramarao Gavara; Ken'ichi Nakagawa; Feng Lei Hong; Masayuki Katsuragawa
OPTICS LETTERS, OPTICAL SOC AMER, 40, 24, 5802-5805, Dec. 2015, Peer-reviwed, We report the generation of five phase-locked harmonics, f(1):2403 nm, f(2):1201 nm, f(3):801 nm, f(4):600 nm, and f(5):480 nm with an exact frequency ratio of 1:2:3:4:5 by implementing a divide-by-three optical frequency divider in the high harmonic generation process. All five harmonics are generated coaxially with high phase coherence in time and space, which are applicable for various practical uses. (C) 2015 Optical Society of America
Scientific journal, English - Freely designable optical frequency conversion in Raman-resonant four-wave-mixing process
Jian Zheng; Masayuki Katsuragawa
SCIENTIFIC REPORTS, NATURE PUBLISHING GROUP, 5, 8874, Mar. 2015, Peer-reviwed, Nonlinear optical processes are governed by the relative-phase relationships among the relevant electromagnetic fields in these processes. In this Report, we describe the physics of arbitrary manipulation of Raman-resonant four-wave-mixing process by artificial control of relative phases. As a typical example, we show freely designable optical-frequency conversions to extreme spectral regions, mid-infrared and vacuum-ultraviolet, with near-unity quantum efficiencies. Furthermore, we show that such optical-frequency conversions can be realized by using a surprisingly simple technology where transparent plates are placed in a nonlinear optical medium and their positions and thicknesses are adjusted precisely. In a numerical simulation assuming practically applicable parameters in detail, we demonstrate a single-frequency tunable laser that covers the whole vacuum-ultraviolet spectral range of 120 to 200 nm.
Scientific journal, English - Observation of coherent two-photon emission from the first vibrationally-excited state of hydrogen molecules
Yuki Miyamoto; Hideaki Hara; Susumu Kuma; Takahiko Masuda; Masayuki Katsuragawa; Itsuo Nakano; Chiaki Ohae; Noboru Sasao; Minoru Tanaka; Satoshi Uetake; Akihiro Yoshimi; Koji Yoshimura; Motohiko Yoshimura
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, OXFORD UNIV PRESS INC, 2014, 11, 09 Jun. 2014, In this paper, we describe an experiment which was conducted to explore the
macro-coherent amplification mechanism using a two-photon emission process from
the first vibrationally-excited state of para-hydrogen molecule. Large
coherence in the initial state was prepared by the adiabatic Raman population
transfer method, and the lowest Stokes sideband was used as a trigger field. We
observed the coherent two-photon emission consistent with the expectation of
the paired super-radiance master equation.
Scientific journal, English - Generation of a Train of Ultrashort Pulses by Simply Inserting Transparent Plates on the Optical Path
Kazumichi Yoshii; Yoshitaka Nakamura; Kohei Hagihara; Masayuki Katsuragawa
2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), IEEE, 2014, Peer-reviwed, We experimentally demonstrate generation of a train of ultrashort pulses with a nearly TL pulse duration of 1.78 fs by simply inserting transparent plates on the optical axis and adjusting their thicknesses precisely.
International conference proceedings, English - Coherent phonon-induced optical modulation in semiconductors at terahertz frequencies
Muneaki Hase; Masayuki Katsuragawa; Anca Monia Constantinescu; Hrvoje Petek
NEW JOURNAL OF PHYSICS, IOP PUBLISHING LTD, 15, NJP / 466098 / SPE/270577, May 2013, Peer-reviwed, The coherent modulation of electronic and vibrational nonlinearities in atoms and molecular gases by intense few-cycle pulses has been used for high-harmonic generation in the soft x-ray and attosecond regime, as well as for Raman frequency combs that span multiple octaves from the terahertz to petahertz frequency regions. In principle, similar high-order nonlinear processes can be excited efficiently in solids and liquids on account of their high nonlinear polarizability densities. In this paper, we demonstrate the phononic modulation of the optical index of Si and GaAs for excitation and probing near their direct band gaps, respectively at similar to 3.4 and similar to 3.0 eV. The large amplitude coherent longitudinal optical (LO) polarization due to the excitation of LO phonons of Si (001) and LO phonon-plasmon coupled modes in GaAs (001) excited by 10 fs laser pulses induces effective amplitude and phase modulation of the reflected probe light. The combined action of the amplitude and phase modulation in Si and GaAs generates phonon frequency combs with more than 100 and 60 THz bandwidth, respectively.
Scientific journal, English - Generation of trains of arbitrary waveforms and their repeated revivals
Masayuki Katsuragawa; Takayuki Suzuki; Kanaka Raju Pandiri
EPJ Web of Conferences, 41, 05 Apr. 2013, We report on manipulation and characterization of highly-discrete coherent spectrum. It is shown that trains of arbitrary optical waveforms are generated and furthermore they revive repeatedly by adding material positive dispersions. © Owned by the authors, published by EDP Sciences, 2013. - The simplest rout to generating a train of attosecond pulses
Kazumichi Yoshii; John Kiran Anthony; Masayuki Katsuragawa
Light: Science & Applications, 2, e58, Mar. 2013, Peer-reviwed
Scientific journal, English - Attosecond Temporal Shape Manipulation by Arbitrarily Designing Spectral Phases
Kazumichi Yoshii; Nurul Sheeda Suhaimi; John Kiran Anthony; Masayuki Katsuragawa
2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR), IEEE, 2013, Peer-reviwed, We report a novel approach to generate an attosecond pulse train from a discrete spectrum in the UV-VIS-NIR range by positioning a set of thin dispersive materials on the optical path.
International conference proceedings, English - Attractive natures of a Raman frequency comb in the time and frequency domains
M. Katsuragawa; K. Yoshii; K. Shiraga; M. Arakawa; F. L. Hong
2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR), IEEE, 2013, Peer-reviwed, We show attractive features of a Raman comb that is produced by an adiabatic Raman process. One is the features in the time domain and the other in the frequency domain.
International conference proceedings, English - Generation of trains of arbitrary waveforms and their repeated revivals
Masayuki Katsuragawa; Takayuki Suzuki; Kanaka Raju Pandiri
XVIIITH INTERNATIONAL CONFERENCE ON ULTRAFAST PHENOMENA, E D P SCIENCES, 41, 11008, 2013, Peer-reviwed, We report on manipulation and characterization of highly-discrete coherent spectrum. It is shown that trains of arbitrary optical waveforms are generated and furthermore they revive repeatedly by adding material positive dispersions.
International conference proceedings, English - The Simplest Method for Generation of an Attosecond Pulse Train
Kazumichi Yoshii; John Kiran Anthony; Masayuki Katsuragawa
XVIIITH INTERNATIONAL CONFERENCE ON ULTRAFAST PHENOMENA, E D P SCIENCES, 41, 01010, 2013, Peer-reviwed, We report an extremely simple approach to generate an attosecond pulse train from more than octave-spanning discrete spectrum by only positioning transparent materials into the optical path without spatially dispersing the frequency components.
International conference proceedings, English - Coherent phonon frequency comb generated by few-cycle femtosecond pulses in Si
Muneaki Hase; Masayuki Katsuragawa; Anca Monia Constantinescu; Hrvoje Petek
XVIIITH INTERNATIONAL CONFERENCE ON ULTRAFAST PHENOMENA, E D P SCIENCES, 41, 04020, 2013, Peer-reviwed, We explore the coherent phonon induced refractive index modulation of a Si(001) surface upon the excitation in near-resonance with the direct band gap of Si. Through the anisotropic e-h pair generation and coherent Raman scattering, similar to 10-fs laser pulses exert a sudden electrostrictive force on Si lattice launching coherent LO phonon oscillations at 15.6 THz frequency. The concomitant oscillatory change in the optical constants modulates the reflected probe light at the fundamental LO phonon frequency, generating a broad comb of frequencies at exact integer multiples of the fundamental frequency extending to beyond 100 THz. On the basis of an analytical model, we show that the simultaneous amplitude and phase modulation of the reflected light by the coherent lattice polarization at 15.6 THz generates the frequency comb.
International conference proceedings, English - Frequency comb generation at terahertz frequencies by coherent phonon excitation in silicon
Muneaki Hase; Masayuki Katsuragawa; Anca Monia Constantinescu; Hrvoje Petek
NATURE PHOTONICS, NATURE PUBLISHING GROUP, 6, 4, 243-247, Apr. 2012, Peer-reviwed, High-order nonlinear light-matter interactions in gases enable the generation of X-ray and attosecond light pulses, metrology and spectroscopy(1). Optical nonlinearities in solid-state materials are particularly interesting for combining optical and electronic functions for high-bandwidth information processing(2). Third-order nonlinear optical processes in silicon have been used to process optical signals with bandwidths greater than 1 GHz (ref. 2). However, fundamental physical processes for a silicon-based optical modulator in the terahertz bandwidth range have not yet been explored. Here, we demonstrate ultrafast phononic modulation of the optical index of silicon by irradiation with intense few-cycle femtosecond pulses. The anisotropic reflectivity modulation by the resonant Raman susceptibility at the fundamental frequency of the longitudinal optical phonon of silicon (15.6 THz) generates a frequency comb up to seventh order. All-optical > 100 THz frequency comb generation is realized by harnessing the coherent atomic motion of the silicon crystalline lattice at its highest mechanical frequency.
Scientific journal, English - The Current Trends in SBS and phase conjugation
T. Omatsu; H. J. Kong; S. Park; S. Cha; H. Yoshida; K. Tsubakimoto; H. Fujita; N. Miyanaga; M. Nakatsuka; Y. Wang; Z. Lu; Z. Zheng; Y. Zhang; M. Kalal; O. Slezak; M. Ashihara; T. Yoshino; K. Hayashi; Y. Tokizane; M. Okida; K. Miyamoto; K. Toyoda; A. A. Grabar; Md. M. Kabir; Y. Oishi; H. Suzuki; F. Kannari; C. Schaefer; K. R. Pandiri; M. Katsuragawa; Y. L. Wang; Z. W. Lu; S. Y. Wang; Z. X. Zheng; W. M. He; D. Y. Lin; W. L. J. Hasi; X. Y. Guo; H. H. Lu; M. L. Fu; S. Gong; X. Z. Geng; R. P. Sharma; P. Sharma; S. Rajput; A. K. Bhardwaj; C. Y. Zhu; W. Gao
LASER AND PARTICLE BEAMS, CAMBRIDGE UNIV PRESS, 30, 1, 117-174, Mar. 2012, Peer-reviwed, The current trends in stimulated Brillouin scattering and optical phase conjugation are overviewed. This report is formed by the selected papers presented in the "Fifth International Workshop on stimulated Brillouin scattering and phase conjugation 2010" in Japan. The nonlinear properties of phase conjugation based on stimulated Brillouin scattering and photorefraction can compensate phase distortions in the high power laser systems, and they will also open up potentially novel laser technologies, e. g., phase stabilization, beam combination, pulse compression, ultrafast pulse shaping, and arbitrary waveform generation.
Scientific journal, English - Generation, manipulation, and characterization of highly-discrete coherent spectrum
M. Katsuragawa; T. Suzuki; K. R. Pandiri
Nonlinear Optics, -, Jul. 2011, Peer-reviwed
International conference proceedings, English - Adiabatic Raman Process and Its Applications into Ultrafast Laser Science
K. R. Pandiri; M. Katsuragawa
JSPS Asian CORE Workshop on Next Generation Ultra-Short Pulse Lasers for High Field and Ultrafast Scienc, -, Mar. 2011
International conference proceedings, English - A 10 THz ultrafast function generator-generation of rectangular and triangular pulse trains
Kanaka Raju Pandiri; Masayuki Katsuragawa
NEW JOURNAL OF PHYSICS, IOP PUBLISHING LTD, 13, Feb. 2011, Peer-reviwed, We report the synthesis of a user-specified, shaped ultrafast pulse train by manipulating the spectral phases of Raman sidebands with a wide frequency spacing line-by-line. Trains of rectangular and triangular pulses are stably produced at an ultrahigh repetition rate of 10.6229 THz, reminiscent of an ultrafast function generator.
Scientific journal, English - Dual-frequency injection-locked nanosecond pulsed laser with arbitrary combination of two oscillation frequencies
Tsuguhito Nakano; Kenta Koizumi; Takashi Onose; Kohji Abe; Masayuki Katsuragawa
OPTICS EXPRESS, OPTICAL SOC AMER, 18, 25, 26409-26416, Dec. 2010, Peer-reviwed, We report a dual-frequency injection-locked nanosecond pulsed laser oscillating at an arbitrary combination of two frequencies over the broad gain range of a Ti:sapphire laser. This performance is achieved by employing two techniques. One involves introducing two different modulation frequencies to discriminate electronically the error signals, which are used for locking the two seed frequencies to the forced oscillator. The other is a cavity design that enables us to sweep the cavity length without distorting the alignment or changing the spatial mode of the cavity. The difference frequencies in a pair of single-frequency nanosecond pulses can be selected continuously from less than 1 GHz to tens of THz without modifying the laser configuration. (C)2010 Optical Society of America
Scientific journal, English - Generation of an ultrahigh-repetition-rate ultrashort-pulse train with a controlled carrier-envelope-phase
K. Yoshii; H. Aoki; K. Shiraga; F-L Hong; H. Ohmura; M. Katsuragawa
The 9th Asian International Seminar on Atomic and Molecular Physics, -, Oct. 2010, Peer-reviwed
International conference proceedings, English - Femtosecond ultrashort pulse generation by addition of positive material dispersion
Takayuki Suzuki; Masayuki Katsuragawa
OPTICS EXPRESS, OPTICAL SOC AMER, 18, 22, 23088-23094, Oct. 2010, Peer-reviwed, We demonstrate femtosecond ultrashort pulse generation by adding further positive group velocity dispersion (GVD) to compensate for the presence of positive GVD. The idea is based on the integer temporal Talbot phenomenon. The broad Raman sidebands with a frequency spacing of 10.6 THz are compressed to form a train of Fourier-transform-limited pulses by passing the sidebands through a device made of dispersive material of variable thickness. (C) 2010 Optical Society of America
Scientific journal, English - Line-by-line control towards 10-THz repetition rate arbitrary optical waveform generation
Kanaka P. Raju; T. Suzuki; A. Suda; K. Midorikawa; M. Katsuragawa
2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS), IEEE, 2010, Peer-reviwed, We report the line-by-line control of 10-THz frequency spacing Raman sidebands produced through an adiabatic Raman process. We finely control the spectral phase of the sidebands to the target flat-relative-spectral phase. (C) 2010 Optical Society of America
International conference proceedings, English - ULTRAHIGH-REPETITION-RATE PULSE TRAIN WITH ABSOLUTE-PHASE CONTROL PRODUCED BY AN ADIABATIC RAMAN PROCESS
M. Katsuragawa; T. Suzuki; K. Shiraga; M. Arakawa; T. Onose; K. Yokoyama; F. L. Hong; K. Misawa
LASER SPECTROSCOPY, WORLD SCIENTIFIC PUBL CO PTE LTD, ISBN-13, 181-+, 2010, Peer-reviwed, We describe the generation of an ultrahigh-repetition-rate train of ultrashort pulses on the basis of an adiabatic Raman process. We also describe recent progress in studies toward the ultimate regime: realization of an ultrahigh-repetition-rate train of monocycle pulses with control of the absolute phase. We comment on the milestones expected in the near future in terms of the study of such novel light sources and the new field of optical science stimulated by their development.
International conference proceedings, English - Line-by-line control of 10-THz-frequency-spacing Raman sidebands
Kanaka Raju Pandiri; Takayuki Suzuki; Akira Suda; Katsumi Midorikawa; Masayuki Katsuragawa
OPTICS EXPRESS, OPTICAL SOC AMER, 18, 2, 732-739, Jan. 2010, Peer-reviwed, We report line-by-line control of a coherent discrete spectrum (Raman sidebands) with a frequency spacing of 10.6 THz that is produced by an adiabatic Raman process. We show that the spectral phase of the Raman sidebands is finely controlled to the target (flat relative-spectral-phase). This is achieved by employing a combination of a spatial phase controller and a spectral interferometer, which are specifically designed for a high-power discrete spectrum. We also show that such spectral-phase control produces a train of Fourier transform limited pulses with an ultrahigh repetition rate of 10.6 THz in the time domain. (C)2010 Optical Society of America
Scientific journal, English - Efficient generation of broad Raman sidebands in a kagome-lattice-type photonic crystal fiber
M. Katsuragawa; Kanaka Raju P; K. Shiraga; H. Aoki; F. Benabid; F. Couny; Y. Y. Wang
2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS), IEEE, -, 2010, Peer-reviwed, We report on the first generation of broad Raman sidebands by employing room-temperature adiabatic Raman excitation in a parahydrogen filled kagome-lattice-type hollow-core photonic-crystal-fiber. The sidebands span over 160 THz with ultra-low pump laser power. (C) 2010 Optical Society of America
International conference proceedings, English - Efficient generation of broad Raman sidebands in a kagome-lattice-type photonic crystal fiber
M. Katsuragawa; Kanaka Raju P; K. Shiraga; H. Aoki; F. Benabid; F. Couny; Y. Y. Wang
2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS), IEEE, -, 2010, Peer-reviwed, We report on the first generation of broad Raman sidebands by employing room-temperature adiabatic Raman excitation in a parahydrogen filled kagome-lattice-type hollow-core photonic-crystal-fiber. The sidebands span over 160 THz with ultra-low pump laser power. (C) 2010 Optical Society of America
International conference proceedings, English - A Raman-type optical frequency comb adiabatically generated in an enhancement cavity
M. Katsuragawa; R. Tanaka; H. Yokota; T. Matsuzawa
2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS), IEEE, -, 2010, Peer-reviwed, We demonstrate efficient generation of a Raman-type optical-frequency-comb by employing adiabatic-Raman-excitation in an enhancement cavity. A broad frequency-comb spanning over 130-THz is realized with an excitation-power reduction exceeding three-orders of magnitude compared with a single-pass-configuration. (C) 2010 Optical Society of America
International conference proceedings, English - A Raman-type optical frequency comb adiabatically generated in an enhancement cavity
M. Katsuragawa; R. Tanaka; H. Yokota; T. Matsuzawa
2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS), IEEE, -, 2010, Peer-reviwed, We demonstrate efficient generation of a Raman-type optical-frequency-comb by employing adiabatic-Raman-excitation in an enhancement cavity. A broad frequency-comb spanning over 130-THz is realized with an excitation-power reduction exceeding three-orders of magnitude compared with a single-pass-configuration. (C) 2010 Optical Society of America
International conference proceedings, English - Octave-Spanning Comb with a Wide Frequency Interval of Molecular Rotational Raman Transition
Kazumichi Yoshii; Kentaro Shiraga; Masaki Arakawa; Hiroshi Aoki; Feng; Lei Hong; Masayuki Katsuragawa
Proc. of the 9th Asian International Seminar on Atomic and Molecular Physics, -, 2010
International conference proceedings, English - Ultrahigh-repetition-rate pulse train with absolute-phase control produced by an adiabatic Raman process
M. Katsuragawa; T. Suzuki; K. Shiraga; M. Arakawa; T. Onose; K. Yokoyama; F. L. Hong; K. Misawa
Proc. of the XIX International Conference, ISBN-13, 978-981-4282-33-8-981, Jun. 2009, Peer-reviwed
International conference proceedings, English - ARBITRARY OPTICAL WAVE GENERATION BY LINE-BY-LINE CONTROL OF SPECTRAL PHASE OF BROAD RAMAN SIDEBANDS
K. R. Pandiri; T. Suzuki; M. Katsuragawa
ICOLS-09, -, Jun. 2009, Peer-reviwed
International conference proceedings, English - Octave-spanning Raman comb stabilized to an optical frequency standard
M. Katsuragawa; F. L. Hong; T. Suzuki; M. Arakawa
2009 CONFERENCE ON LASERS AND ELECTRO-OPTICS AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2009), VOLS 1-5, IEEE, 590-+, 2009, Peer-reviwed, It is shown that adiabatic manipulation of a Raman process allows us to produce an optical-frequency-comb from single-frequency lasers. The carrier-envelope-offset frequency of the generated octave-spanning Raman comb is stabilized to an optical-frequency-standard. (C)2009 Optical Society of America
International conference proceedings, English - Generation of octave-spanning Raman comb stabilized to an optical frequency standard
M. Katsuragawa; F. L. Hong; M. Arakawa; T. Suzuki
ULTRAFAST PHENOMENA XVI, SPRINGER-VERLAG BERLIN, 92, 855-+, 2009, Peer-reviwed, We show a novel octave-spanning comb generation having precise frequency-spacing of a Raman transition. It is shown that the carrier-envelope-offset of the Raman comb is precisely controlled by stabilizing the driving lasers to an optical-frequency-standard.
International conference proceedings, English - Carrier envelope offset control of broad Raman sidebands by locking two pump laser frequencies to a single optical cavity
T. Suzuki; M. Hirai; R. Tanaka; M. Katsuragawa
ULTRAFAST PHENOMENA XVI, SPRINGER-VERLAG BERLIN, 92, 873-875, 2009, Peer-reviwed, We generate broad Raman sidebands with zero carrier-envelope-offset by frequency-locking the pump lasers to a single optical cavity. It is shown in both spectral and temporal domains that the carrier-envelope-offset is controlled to discrete values.
International conference proceedings, English - Generation of octave-spanning Raman comb stabilized to an optical frequency standard
M. Katsuragawa; F. L. Hong; M. Arakawa; T. Suzuki
ULTRAFAST PHENOMENA XVI, SPRINGER-VERLAG BERLIN, 92, 855-+, 2009, Peer-reviwed, We show a novel octave-spanning comb generation having precise frequency-spacing of a Raman transition. It is shown that the carrier-envelope-offset of the Raman comb is precisely controlled by stabilizing the driving lasers to an optical-frequency-standard.
International conference proceedings, English - Spectral phase measurements for broad Raman sidebands by using spectral interferometry
Takayuki Suzuki; Naoki Sawayama; Masayuki Katsuragawa
OPTICS LETTERS, OPTICAL SOC AMER, 33, 23, 2809-2811, Dec. 2008, Peer-reviwed, We report a method of spectral phase measurement for a femtosecond pulse train composed of a discrete Raman spectrum. The method is based on an idea of spectral interference. Making use of a small portion of two Raman pump laser radiations, we produce two sum-frequency spectra that spectrally interfere with each other. Based on this interfering sum-frequency spectra, we successfully derive the spectral phase and reconstruct the temporal profile. The reliability of this method is also confirmed by measuring the spectral phase changes caused by intentionally inserted silica plates of various thicknesses and comparing them to theoretical predictions. (C) 2008 Optical Society of America
Scientific journal, English - Octave-Spanning Raman Comb with Carrier Envelope Offset Control
Takayuki Suzuki; Masataka Hirai; Masayuki Katsuragawa
PHYSICAL REVIEW LETTERS, AMER PHYSICAL SOC, 101, 24, 243602-243605, Dec. 2008, Peer-reviwed, We report that adiabatic manipulation of a Raman process allows us to produce an optical-frequency comb from single-frequency lasers. We realize an octave-spanning Raman comb with carrier-envelope-offset frequency control, by using dual-frequency laser radiation locked on a single laser cavity and simultaneously its second harmonic. It is shown that in both the temporal and spectral domains, locking the dual frequencies on a single laser cavity provides control of the carrier-envelope-offset frequency at integer multiples of the free spectral range of the laser cavity.
Scientific journal, English - Stable confinement of nanosecond laser pulse in an enhancement cavity
R. Tanaka; T. Matsuzawa; H. Yokota; T. Suzuki; Y. Fujii; A. Mio; M. Katsuragawa
OPTICS EXPRESS, OPTICAL SOC AMER, 16, 23, 18667-18674, Nov. 2008, Peer-reviwed, We present a technique that enhances the intensity of a nanosecond laser pulse by confining it in an enhancement cavity. The point of the technique is that a weak continuous-wave laser radiation, locked to the enhancement cavity, is injected into a nanosecond injection-locked pulsed laser as a seed. This leads to a stable confinement of the nanosecond pulse in the enhancement cavity. It is demonstrated that the pulsed intensity is enhanced by a factor of 120 for a 40-ns pulse, consistent with the theoretical prediction. (c) 2008 Optical Society of America
Scientific journal, English - Ultrashort Pulse Generation from Broad Raman Sidebands with Zero Carrier Envelope Phase
T. Suzuki; M. Katsuragawa
0, Aug. 2008, Peer-reviwed
International conference proceedings, English - Generation of octave-spanning Raman comb stabilized to an optical frequency standard
M. Katsuragawa; F. L. Hong; M. Arakawa; T. Suzuki
Ultrafast Phenomena, 0, 0, 0, Jun. 2008, Peer-reviwed
International conference proceedings, English - Carrier envelope offset control of broad Raman sidebands by locking two pump laser frequencies to a single optical cavity
T. Suzuki; M. Hirai; R. Tanaka; M. Katsuragawa
Ultrafast Phenomena, 0, 0, 0, Jun. 2008, Peer-reviwed
International conference proceedings, English - Arbitrary optical waveform generation with ultra-high repetition rate using line-by-line control of spectral phase of broad Raman sidebands
Kanaka Raju Pandiri; T. Suzuki; M. Katsuragawa
First International Symposium on Interdisciplinary Materials Science (ISIMS-2008), 88, Mar. 2008, Peer-reviwed
International conference proceedings, English - Full characterization of an ultrahigh-repetition-rate train of ultrashort pulses generated with phase-coherent Raman sidebands
Masayuki Katsuragawa; Takashi Onose; Takayuki Suzuki; Kazuhiko Misawa
2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9, IEEE, 3183-+, 2008, Peer-reviwed, We generate a train of highly-stable ultrashort-pulses with a repetition-rate of 10.6 THz by synthesizing phase-coherent rotational-Raman-sidebands in para-hydrogen. We show full characterization of its temporal waveform based on a frequency-resolved-optical-gating method. (c) 2007 Optical Society of America
International conference proceedings, English - Generation of broad Raman sidebands with zero carrier envelope offset by locking two pump-laser frequencies to a single optical cavity
Takayuki Suzuki; Masataka Hirai; Masayuki Katsuragawa
2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9, IEEE, 1566-1567, 2008, Peer-reviwed, We generate broad Raman sidebands with controlled carrier-envelope-offset (CEO) by locking the pump frequencies to a cavity. The CEOs controlled to integer multiples of the cavity FSR are observed both in spectral and temporal domains. (C) 2008 Optical Society of America
International conference proceedings, English - Ultrafast atomic and molecular dynamics in intense laser fields
Koudai Toyota; Hirokazu Matsunaga; Shinsuke Itoh; Toru Morishita; Shinichi Watanabe; Takayuki Suzuki; Masayuki Katsuragawa
21st century COE Program: International symposium on Coherent Optical Science, P33, Abstract pp. 45, Dec. 2007
International conference proceedings, English - Selective generation of pure frequency phonons using a gigahertz-beating nanosecond pulse
Yasuhiro Fujii; Sunryo Lee; Kenta Koizumi; Masayuki Katsuragawa
21st century COE Program: International symposium on Coherent Optical Science, P17, Abstract pp. 29, Dec. 2007
International conference proceedings, English - Dual frequency pulsed laser with an accurate gigahertz-beat-note
Y. Fujii; M. Katsuragawa
Optics Letters, 15, 3065-3067, Oct. 2007, Peer-reviwed
Scientific journal, English - Generation of broad Raman sidebands with zero carrier envelope offset by controlling absolute frequencies of two excitation laser pulses
T. Suzuki; M. Arakawa; M. Hirai; F. L. Hong; M. Katsuragawa
Asian Core program "Frontiers on material, photo-, and theoretical molecular sciences", 0, Sep. 2007, Peer-reviwed
International conference proceedings, English - Fourier-Synthesis of Phase Coherent Raman Sidebands and Full Characterization of the Temporal Waveform
M. Katsuragawa; T. Onose; T. Suzuki; K. Misawa
Nonlinear Optics 2007, 0, Aug. 2007, Peer-reviwed
International conference proceedings, English - Dual-wavelength injection-locked pulsed laser with highly predictable performance
Takashi Onose; Masayuki Katsuragawa
OPTICS EXPRESS, OPTICAL SOC AMER, 15, 4, 1600-1605, Feb. 2007, Peer-reviwed, The characteristics of a dual-wavelength injection-locked pulsed laser are systematically studied. A simple and effective model is proposed to quantitatively study this type of laser system. It is shown that the model precisely predicts the performance of such a system over a wide spectral region and a full dynamic range. Furthermore, the results confirm the accuracy of the assumption regarding the homogeneous broadening in Ti:sapphire lasers, and also prove that competition between the two wavelength components does not induce instability. (c) 2007 Optical Society of America.
Scientific journal, English - Development of Dual-Wavelength Injection-Locked Pulsed Laser and its Application to Generation of an Ultrahigh-Repetition-Rate Train of Ultrashort Pulses
T. Onose; M. Katsuragawa; K. Misawa
Advanced Solid State Photonics, -, Jan. 2006, Peer-reviwed
International conference proceedings, English - Adiabatic manipulation of high density molecular ensemble and its application to ultrashort pulse generation, International Seminar on Progress and Excitement in AMO Physics
T. Onose; M. Katsuragawa; K. Misawa
International Seminar on Progress and Excitement in AMO Physics, -, Jan. 2006, Peer-reviwed
International conference proceedings, English - Dual-wavelength injection-locked pulsed laser
M Katsuragawa; T Onose
OPTICS LETTERS, OPTICAL SOC AMER, 30, 18, 2421-2423, Sep. 2005, Peer-reviwed, An injection-locked pulsed Ti:sapphire laser oscillating at dual wavelengths is demonstrated for the first time to our knowledge. By use of two feedback loops, seeds of two independent master lasers are locked on specific longitudinal modes of a power oscillator, leading to a stable dual-wavelength oscillation over a long time scale. The two injection-locked pulsed outputs completely overlap in time, with spectral purities reaching a Fourier-transform limit. The dual-wavelength oscillation is controlled by the master lasers only, allowing for flexible selectivity of the two wavelengths and full controllability of the relative two-wavelength pulsed energies. (c) 2005 Optical Society of America.
Scientific journal, English - Generation of a 10-THz ultrahigh-repetition-rate train by synthesizing phase-coherent Raman-sidebands
M. Katsuragawa; K. Misawa; K. Yokoyama; T. Onose
21 century COE international symposium, 13, --5634, Jul. 2005, Peer-reviwed
International conference proceedings, English - Generation of a 10.6-THz ultrahigh-repetition-rate train by synthesizing phase-coherent Raman-sidebands
M Katsuragawa; K Yokoyama; T Onose; K Misawa
OPTICS EXPRESS, OPTICAL SOC AMER, 13, 15, 5628-5634, Jul. 2005, Peer-reviwed, A train of highly-stable, high-beam-quality ultrashort pulses is successfully produced by synthesizing phase-coherent rotational-Raman-sidebands in parahydrogen. The intensity-waveform of this ultrashort-pulse-train is directly evaluated in time domain based on a sum-frequency-generation autocorrelation-technique. It is shown that a 10.6-THz ultrahigh-repetition-train of short pulses is formed with an effective-duration of 20 fs and a high peak-power of 2 MW. (C) 2005 Optical Society of America.
Scientific journal, English - 10.6-THz repetition-rate, 21-fs ultrashort-pulse generation
M. Katsuragawa; K. Misawa; K. Yokoyama; T. Onose
10.6-THz repetition-rate, 21-fs ultrashort-pulse generation, -, Jun. 2005, Peer-reviwed
International conference proceedings, English - Dual wavelength injection locked pulsed Ti:sapphire laser, International Seminar on Atomic Process
T. Onose; M. Katsuragawa
International Seminar on Atomic Process,, -, Jan. 2005, Peer-reviwed
International conference proceedings, English - A two-wavelength injection-locked pulsed Ti:sapphire laser
Takashi Onose; Masayuki Katsuragawa
IQEC, International Quantum Electronics Conference Proceedings, 2005, 1334-1335, 2005, Peer-reviwed, The successful development of an injection-locked pulsed Ti: sapphire laser oscillating at two-wavelengths is demonstrated. The two injection-locked pulsed outputs are completely overlapped in time with spectral purities of a Fourier-transform-limit.
International conference proceedings, English - A 10.6-THz repetition-rate, 21-fs ultrashort-pulse generation by synthesizing phase-coherent Raman-sidebands
Masayuki Katsuragawa; Kazuhiko Misawa; Keitaro Yokoyama; Takashi Onose
IQEC, International Quantum Electronics Conference Proceedings, 2005, 548-550, 2005, Peer-reviwed, Highly-stable ultrashort pulse trains with a duration of 21 fs and a repetition rate of 10.6 THz is successfully demonstrated by synthesizing rotational Raman-sidebands in parahydrogen.
International conference proceedings, English - A two-wavelength injection-locked pulsed Ti:sapphire laser
Takashi Onose; Masayuki Katsuragawa
IQEC, International Quantum Electronics Conference Proceedings, 2005, 1334-1335, 2005, Peer-reviwed, The successful development of an injection-locked pulsed Ti: sapphire laser oscillating at two-wavelengths is demonstrated. The two injection-locked pulsed outputs are completely overlapped in time with spectral purities of a Fourier-transform-limit.
International conference proceedings, English - Nonlinear frequency conversion by Raman coherence prepared in solid hydrogen film
GJ Lee; K Hara; M Katsuragawa; K Hakuta
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS, WORLD SCIENTIFIC PUBL CO PTE LTD, 13, 3-4, 433-437, Dec. 2004, Peer-reviwed, We investigated the Raman coherence characteristics in the solid hydrogen film deposited on a sapphire substrate. By using Raman coherence prepared with two single-frequency pulsed lasers, we generated the multiorder coherent Raman sidebands in solid hydrogen film. High-order Raman sidebands were obtained under strong pumping conditions (greater than or equal to 230 MW/cm(2)). The generated anti-Stokes(AS)-Raman sidebands extended from ultraviolet (292 nm for AS5 band) to visible (565 nm for AS1 band) region. The multiorder Raman sideband generation is thought to be due to the parametric coupling of pump and coupling lasers. The frequency conversion efficiency shows the maximum (14%) at the pumping intensity of 360 MW/cm(2). From the experiment that makes the multimode probe beam beat with the prepared Raman coherence, we found that the prepared Raman coherence replicates the probe beam to its Raman sidebands.
Scientific journal, English - Observation of multiorder coherent Raman sidebands in solid hydrogen film
GJ Lee; K Hara; M Katsuragawa; K Hakuta
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, KOREAN PHYSICAL SOC, 45, 1, 75-79, Jul. 2004, Peer-reviwed, We investigated the Raman coherence characteristics of a solid hydrogen film deposited on a sapphire substrate held at 5.3 K. Using Raman coherence prepared with two single-frequency pulsed lasers, we generated the multiorder coherent Raman sidebands in solid hydrogen film. The highorder Raman sidebands were obtained under strong pumping intensities (greater than or equal to 230 MW/cm(2)). The generated anti-Stokes(AS)-Raman sidebands extend from the ultraviolet (292 nm for the AS5 band) to the visible (565 nm for the AS1 band) region. The multiorder Raman sideband generation is found to be due to the parametric coupling of pump and coupling lasers. The frequency conversion efficiency from pumping beams to the first AS-Raman sideband shows a maximum (14 %) at a pumping intensity of 360 MW/cm(2). From an experiment that makes the multimode probe beam beat with the prepared Raman coherence, we found that the prepared Raman coherence replicates the probe beam to its Raman sidebands.
Scientific journal, English - Comb generation of collinear Raman sidebands by three correlated coherent molecular oscillations
M. Katsuragawa; Y. Ono; Fam Le Kien; K. Hakuta
CLEO/IQEC 2004, -, May 2004, Peer-reviwed
International conference proceedings, English - Raman sideband generation at near maximal coherence, Light Modulation based on Quantum Coherence,Light Modulation based on Quantum Coherence
M. Katsuragawa; Y. Ono; K. Hakuta
The 9th Japan-US Seminar on Quantum Electronics and Laser Spectroscopy, 16, 315, 2003, Peer-reviwed
International conference proceedings, English - Raman sideband generation at near maximal coherence, Light Modulation based on Quantum Coherence
M. Katsuragawa; Y. Ono; K. Hakuta
The 9th Japan-US Seminar on Quantum Electronics and Laser Spectroscopy, 16, 2003, Peer-reviwed
International conference proceedings, English - Raman sideband generation at near maximal coherence
M. Katsuragawa; Y. Ono; K. Hakuta
ICAP Eighteenth International Conference on Atomic Physics, pp. 258, Jul. 2002, Peer-reviwed
International conference proceedings, English - Slow light produced by stimulated Raman scattering in solid hydrogen
J. Q. Liang; M. Katsuragawa; Fam Le Kien; K. Hakuta
Physical Review A - Atomic, Molecular, and Optical Physics, 65, 3, 4, 2002, Peer-reviwed, We demonstrate experimentally that far-off-resonance stimulated Raman scattering in solid hydrogen driven by a strong-coupling field allows us to slow down the pulse-peak velocity of the Stokes and anti-Stokes fields to the order of [Formula Presented] We observe the splitting of the temporal profile of the sideband-field pulses into a two-peak structure that is a signature of the separation between the copropagating normal modes. © 2002 The American Physical Society.
Scientific journal, English - Efficient Frequency Conversion of Incoherent Fluorescence Light
M. Katsuragawa; J. Q. Liang; Fam Le Kien; K. Hakuta
Physical Review A, 65, 025801, 2002, Peer-reviwed
Scientific journal, English - Slow Light in a Far-Off-Resonance Raman Medium
J. Q. Liang; M. Katsuragawa; Fam Le Kien; K. Hakuta
Physical Review A, 65, 031801(R), 2002, Peer-reviwed
Scientific journal, English - Coherent Brillouin spectroscopy in solid parahydrogen
K Kuroda; JZ Li; M Suzuki; M Katsuragawa; K Hakuta
JOURNAL OF LOW TEMPERATURE PHYSICS, KLUWER ACADEMIC/PLENUM PUBL, 125, 1-2, 39-48, Oct. 2001, Peer-reviwed, We applied coherent Brillouin spectroscopy to solid parahydrogen, and measured the Brillouin spectra of longitudinal acoustic modes at 5.6 K. It was found that the linewidth of these spectra is similar to 1.5 MHz. From the observed Brillouin shift and the crystal orientation, the elastic stiffness was determined as C-11 =0.355 +/-0.016 GPa and C-33 =0.432 +/-0.022 GPa.
Scientific journal, English - Measurement of the energy decay rate for the first vibrational-excited-state in solid parahydrogen
JZ Li; M Suzuki; M Katsuragawa; K Hakuta
JOURNAL OF CHEMICAL PHYSICS, AMER INST PHYSICS, 115, 2, 930-932, Jul. 2001, Peer-reviwed, Energy decay rate of the first vibrational excited state for solid parahydrogen is measured from 4.8 K to 12 K. Measurements are carried out using the transient optothermal lensing spectroscopy with the vibrational excitations via the stimulated Raman scattering. The decay rate is measured to be 2.3x10(4) s(-1) at 4.8 K, and it increases to 6.1x10(4) s(-1) by raising the temperature to 12 K. (C) 2001 American Institute of Physics.
Scientific journal, English - Parametric stimulated Raman scattering with solid hydrogen
M Katsuragawa; JQ Liang; K Hakuta
JOURNAL OF LOW TEMPERATURE PHYSICS, KLUWER ACADEMIC/PLENUM PUBL, 122, 3-4, 359-365, Feb. 2001, Peer-reviwed, We investigate solid hydrogen as a nonlinear optical medium. We carry out stimulated Raman scattering (SRS) experiments using a large Raman coherence prepared with two single frequency pulsed lasers. We show that multiorder SRS generation proceeds collinearly to the pump beam axis without stringent restriction of phase matching. We show also that the SRS generation dominantly occurs for negative two-photon detuning for which the Raman coherence can follow the antiphased state coherence.
Scientific journal, English - Large coherence as a local oscillator with a high frequency of 120 THz
M. Katsuragawa; J. Q. Liang; F. Le Kien; K. Hakuta
Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001, Institute of Electrical and Electronics Engineers Inc., 27, 2001, Peer-reviwed, Summary form only given. The concept of electro-magnetically induced transparency (EIT) has been extended in various subjects, frequency conversion with maximal coherence, ultra-slow light, sub-femto second pulse generation, and so on. Recently we have shown that the concept of EIT is applicable for solid system using a quantum solid (solid hydrogen) and shown generation of collinear parametric Raman scattering. Here we extend our previous work to a more general parametric Raman sideband generation. We show a large coherence of stimulated Raman scattering process in solid parahydrogen with two pump lasers. We modulate various probe lights, and efficiently and replicate the nature of these probe lights.
International conference proceedings, English - Slow light in a far-off-resonance Raman medium
JQ Liang; M Katsuragawa; F Le Kien; K Hakuta
CLEO(R)/PACIFIC RIM 2001, VOL II, TECHNICAL DIGEST, IEEE, 616-617, 2001, Peer-reviwed, We observe slow group velocities of light of order c/10000 in the stimulated Raman scattering in solid hydrogen. We also observe the signature of the splitting between the normal modes which propagate with different group velocities.
International conference proceedings, English - Slow light produced by stimulated Raman scattering in solid hydrogen
J. Q. Liang; M. Katsuragawa; Fam Le Kien; K. Hakuta
CLEO/QELS 2001, 8, 2001, Peer-reviwed
International conference proceedings, English - Sideband generation using strongly driven Raman coherence in solid hydrogen
JQ Liang; M Katsuragawa; F Le Kien; K Hakuta
PHYSICAL REVIEW LETTERS, AMERICAN PHYSICAL SOC, 85, 12, 2474-2477, Sep. 2000, Peer-reviwed, Parametric Raman sideband generation is investigated using strongly driven Raman coherence in solid hydrogen. We show that the Raman coherence prepared with two coaxial single-mode lasers beats with multimode laser radiation with very broad bandwidth and efficiently replicates the broadband nature to the Raman sidebands without the restriction of phase matching. We demonstrate that this efficient replication occurs mainly on the negative side of Raman detuning, where the medium adiabatically follows the antiphased state.
Scientific journal, English - Sideband generation using strongly coupled Raman coherence in solid hydrogen
J. Q. Liang; M. Katsuragawa; Fam Le Kien; K. Hakuta
-, May 2000, Peer-reviwed
International conference proceedings, English - Sideband generation using strongly coupled Raman coherence in solid hydrogen
J. Q. Liang; M. Katsuragawa; Fam Le Kien; K. Hakuta
QELS2000, -, May 2000, Peer-reviwed
International conference proceedings, English - Single-longitudinal-mode pulsed dye laser with coaxial end-pumping and self-seeding
JZ Li; M Katsuragawa; K Hakuta
OPTICAL REVIEW, OPTICAL SOC JAPAN, 7, 3, 275-276, May 2000, We report a single-longitudinal-mode pulsed dye laser scheme in grazing incidence geometry. The points are to incorporate coaxial end-pumping and self-seeding into the conventional grazing incidence geometry termed the Littman scheme (Appl. Opt. 23 (1984) 4465). It is shown that the present scheme can considerably reduce the pump threshold and realize higher output power with better stability than the conventional Littman scheme.
Scientific journal, English - Raman gain measurement in solid parahydrogen
M Katsuragawa; K Hakuta
OPTICS LETTERS, OPTICAL SOC AMER, 25, 3, 177-179, Feb. 2000, We report a steady-state Raman gain measurement of the Q(1)(0) transition (v = 1 <-- 0, J = 0 <-- 0) in solid parahydrogen. We carry out measurements by pumping with a continuous-wave frequency-doubled YAG laser at 532 nm and observing the direct amplification of a probe-laser beam for the first Stokes transition at 683 nm. A large single-pass amplification coefficient of 2.3 +/- 0.2 is obtained at a pump intensity of 46 kW/cm(2), with an interaction length of 1 cm, giving a steady-state Raman gain coefficient of 18 +/- 3 cm/MW. (C) 2000 Optical Society of America. OCIS codes: 290.3700, 290.5910, 190.2640, 190.5650, 190.5890.
Scientific journal, English - Stimulated Raman scattering in a liquid-hydrogen droplet
S Uetake; M Katsuragawa; M Suzuki; K Hakuta
PHYSICAL REVIEW A, AMERICAN PHYSICAL SOC, 61, 1, art. no.-011803, Jan. 2000, Stimulated Raman scattering (SRS) is investigated in a liquid parahydrogen droplet. We show that the liquid hydrogen droplet readily leads to a high-cavity Q value exceeding 10(9) for whispering gallery modes, and that the SRS in the liquid-hydrogen droplet proceeds not only for vibrational transition but also for rotational transition as in the gas-phase H-2 system, leading to multiorder SRS sidebands covering the whole visible spectral range.
Scientific journal, English - Stimulated raman scattering of solid hydrogen in the strong-coupling regime
K Hakuta; M Katsuragawa; JZ Li; JQ Liang; M Suzuki
FRONTIERS OF LASER PHYSICS AND QUANTUM OPTICS, SPRINGER-VERLAG BERLIN, 261-267, 2000, Stimulated Raman scattering (SRS) processes are investigated in solid hydrogen in the strong-coupling regime. We show that multi-order SRS processes in solid hydrogen are governed by the anti-phased state coherence, and that the coherence reveals an extremely slow dephasing which may give a concrete basis on the strongly-coupled nonlinear optics using solid hydrogen.
International conference proceedings, English - Subfemtosecond pulse generation with molecular coherence control in stimulated Raman scattering
F Le Kien; JQ Liang; M Katsuragawa; K Ohtsuki; K Hakuta; AV Sokolov
PHYSICAL REVIEW A, AMER PHYSICAL SOC, 60, 2, 1562-1571, Aug. 1999, We study the generation of subfemtosecond pulses with the molecular coherence control in stimulated Raman scattering. We show analytically that the antiphased state temporally advances the higher frequencies with respect to the lower frequencies during a beating cycle. After some propagation distance, due to the dispersion and the difference between the antiphased and phased states in advancing high or low frequencies, the coherence is highest on the negative side of the detuning, when the two-photon Rabi frequency is about equal to the detuning. This asymmetry of the coherence magnitude with respect to the negative and positive sides of the Raman detuning is reflected in the behavior of the tuning characteristics of the high-order frequency components. When the Raman detuning is small, although the process is nonadiabatic, the subfemtosecond pulse generation may occur for both negative and positive sides of the detuning. [S1050-2947(99)00908-7].
Scientific journal, English - CLEO'99国際会議報告
桂川真幸
-, Jul. 1999
International conference proceedings, Japanese - Stimulated Raman Scattering in liquid hydrogen droplet
S. Uetake; M. Katsuragawa; M. Suzuki; K. Hakuta
194-195, May 1999, Peer-reviwed
International conference proceedings, English - Stimulated Raman Scattering in solid hydrogen based on adiabatic preparation of anti-phased state
M. Katsuragawa; J.Q. Liang; J.Z. Li; M. Suzuki; K. Hakuta
195-196, May 1999, Peer-reviwed
International conference proceedings, English - Stimulated Raman Scattering in liquid hydrogen droplet
S. Uetake; M. Katsuragawa; M. Suzuki; K. Hakuta
CLEO/QELS '99, 194-195, May 1999, Peer-reviwed
International conference proceedings, English - Stimulated Raman Scattering in Solid Hydrogen based on Adiabatic Preparation of Anti-Phased State
M. Katsuragawa; J. Q. Liang; J.Z. Li; M. Suzuki; K. Hakuta
CLEO/QELS '99, 195-196, May 1999, Peer-reviwed
International conference proceedings, English - Stimulated Raman scattering in solid hydrogen: Measurement of coherence decay
JZ Li; M Katsuragawa; M Suzuki; K Hakuta
PHYSICAL REVIEW A, AMERICAN PHYSICAL SOC, 58, 1, R58-R60, Jul. 1998, Stimulated Raman scattering (SRS) is experimentally investigated for solid hydrogen in the context of the strong coupling. Coherence decay behaviors are measured for the Raman transition of Q(0) (nu = 1 - 0) using the time-resolved coherent anti-stokes Raman-scattering method. We show that the coherence decay for the Raman transition changes with the evolution of the SRS from the weak-coupling regime to the strong-coupling regime.
Scientific journal, English - Stimulates Raman Scattering of Solid hydrogen in the Strong-Coupling Regime: Measurement of the Coherence Decay
M. Katsuragawa; J. ZL, Li; M. Suzuki; K. Hakuta
-, May 1998, Peer-reviwed
International conference proceedings, English - Stimulated Raman Scattering of Solid Hydrogen in the strong-coupling regime: measurement of the coherence decay time
M. Katsuragawa; J.Z. Li; M. Suzuki; K. Hakuta
68, May 1998, Peer-reviwed
International conference proceedings, English - Stimulated Raman scattering with strong-coupling in solid hydrogen
M Katsuragawa; M Suzuki; JQ Liang; JZ Li; RSD Sihombing; K Hakuta
JOURNAL OF LOW TEMPERATURE PHYSICS, PLENUM PUBL CORP, 111, 3-4, 497-502, May 1998, It is shown through stimulated Raman scattering in parahydrogen crystal that strongly coupled dressed states on the field-matter interacting system are established in the far off-resonant condition, and that the phase-matching for the parametric anti-Stokes generation process is realized without strict restriction of the medium refractive index dispersion.
Scientific journal, English - Stimulated Raman Scattering of Solid Hydrogen in the strong-coupling regime: measurement of the coherence decay time
M. Katsuragawa; J.Z. Li; M. Suzuki; K. Hakuta
International Quantum Electronics Conference '98, 68, May 1998, Peer-reviwed
International conference proceedings, English - Nonlinear optics in solid hydrogen
M. Katsuragawa; M. Suzuki; R. S; D. Shihombing; J. Z. Li; K. Hakuta
Laser and Particle Beams, 16, 641-648, Mar. 1998
Scientific journal, English - Solid Hydrogen for Non linear Optics
M. Suzuki; M. Katsuragawa; R. S; D. Shhombing; J. Z. Li; K. Hakuta
Journal of Low Temperature Physics, 111, 463-468, 1998
Scientific journal, English - Nonlinear Optics in Solid Hydrogen
K. Hakuta; M. Katsuragawa; M. Suzuki; R. S; D. Sihombing; J.Z. Li
Laser Application to Muon Science, --121, 1998, Peer-reviwed
International conference proceedings, English - Nonlinear optics in solid hydrogen
M Katsuragawa; M Suzuki; RSD Sihombing; JZ Li; K Hakuta
LASER AND PARTICLE BEAMS, CAMBRIDGE UNIV PRESS, 16, 4, 641-648, 1998, Peer-reviwed, We show through experiments of stimulated Raman scattering how solid hydrogen (parahydrogen) can open new perspectives on nonlinear optics. Two phenomena are described: One is the self-induced phase matching in parametric anti-Stokes stimulated Raman scattering (SRS) in which the phase matching is self-organized automatically without the stringent restriction of refractive-index dispersion of the medium, and the other is the extremely slow coherence decay behavior for the Raman transition that may result in the Raman width of 80 Wt full width at half maximum (FWHM).
Scientific journal, English - Dark-state coherence and stimulated Raman scattering in solid hydrogen
K Hakuta; M Katsuragawa; M Suzuki
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, ROYAL SOC, 355, 1733, 2405-2408, Dec. 1997, We show through the experiments of stimulated Raman scattering in solid hydrogen that a strongly coupled dressed state, dark state, is spontaneously established as the eigenstate of the field-matter interacting system, and that in terms of the parametric anti-Stokes generation process the phase matching is self-induced as a consequence of the establishment of the dark state.
Scientific journal, English - Stimulated Raman Scattering with Strong-Coupling in Solid Hydrogen
M. Katsuragawa; M. Suzuki; J. Q. Liang; J.Z. Li; R. S; D. Sihombing; K. Hakuta
2-3, Sep. 1997, Peer-reviwed
International conference proceedings, English - Solid Hydrogen for Nonlinear optics, Second International Conference on Cryocrystals and Quantum Crystals
M. Suzuki; M. Katsuragawa; R. S; D. Sihombing; J.Z. Li; K. Hakuta
-, Sep. 1997, Peer-reviwed
International conference proceedings, English - Stimulated Raman Scattering with Strong-Coupling in Solid Hydrogen
M. Katsuragawa; M. Suzuki; J. Q. Liang; J.Z. Li; R. S; D. Sihombing; K. Hakuta
Second International Conference on Cryocrystals and Quantum Crystals, 2-3, Sep. 1997, Peer-reviwed
International conference proceedings, English - Single-frequency injection seeded pulsed Ti:Al2O3 ring laser
A Ogino; M Katsuragawa; K Hakuta
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, JAPAN J APPLIED PHYSICS, 36, 8, 5112-5115, Aug. 1997, A pulsed Ti:Al2O3 ring laser system injection seeded with a laser diode is presented. The Ti:Al2O3 laser generates single-frequency output with Fourier-limit temporal profiles. Temporal characteristics are systematically investigated, leading to a fact that the temporal stability of pulsed output is essentially determined by the fluctuation of the pump YAG laser output.
Scientific journal, English - Parametric Anti-Stokes Stimulated Raman Scattering under Strong-Coupling Condition
M. Katsuragawa; J. Q. Liang; J.Z. Li; M. Suzuki; K. Hakuta
225, Jul. 1997, Peer-reviwed
International conference proceedings, English - Parametric Anti-Stokes Stimulated Raman Scattering under Strong-Coupling Condition
M. Katsuragawa; J. Q. Liang; J.Z. Li; M. Suzuki; K. Hakuta
CLEO/Pacific Rim '97, 225, Jul. 1997, Peer-reviwed
International conference proceedings, English - Self-Induced Phase-Matching for Stimulated Raman Scattering Process in Solid Hydrogen
K. Hakuta; M. Suzuki; M. Katsuragawa; J.Z. Li
Physical Review Letters, 79, 2, 209-212, 1997
Scientific journal, English - Solid Hydrogen for Nonlinear optics
M. Suzuki; M. Katsuragawa; R. S; D. Sihombing; J.Z. Li; K. Hakuta
Second International Conference on Cryocrystals and Quantum Crystals, -, 1997, Peer-reviwed
International conference proceedings, English - Quantum interferences in resonant multiphoton-ionization processes for a strongly coupled atomic system
RSD Sihombing; M Katsuragawa; GZ Zhang; K Hakuta
PHYSICAL REVIEW A, AMERICAN PHYSICAL SOC, 54, 2, 1551-1555, Aug. 1996, Peer-reviwed, The resonant multiphoton-ionization (MPI) processes in a strongly coupled atomic system have been investigated theoretically and experimentally using atomic hydrogen as a test medium. The characteristics are described with a parameter NL: the product of atom density and interaction length. The MPI characteristics exhibit a single-atom behavior revealing an Autler-Townes doublet in the low-NL region. In the high-NL region, the Autler-Townes doubler is suppressed to almost zero. This phenomenon is shown to be due to destructive interference between the excitation channels to the strongly coupled upper states. It is also shown that a narrow Doppler-free MPI peak appears at the split center of the Autler-Townes doubler in the high-NL region as a consequence of the strong coupling and the propagation effect.
Scientific journal, English - Sum-frequency generation using strong-field coupling in atomic hydrogen: Effect of co-existing molecular hydrogen
M Katsuragawa; GZ Zhang; K Hakuta
OPTICS COMMUNICATIONS, ELSEVIER SCIENCE BV, 129, 3-4, 212-216, Aug. 1996, Sum-frequency generation using strong-field coupling is investigated in atomic hydrogen through electromagnetically induced phase-matching. Effects of co-existing molecular hydrogen are examined experimentally. Results are quantitatively compared with theoretical calculations, showing excellent agreement.
Scientific journal, English - Stimulated Raman Scattering in Solid Hydrogen
K. Hakuta; M. Katsuragawa; R. S; D. Sihombing; T. Momose; M. Suzuki
Technical Digest, FI5, 266-267, Jul. 1996, Peer-reviwed
International conference proceedings, English - Time- and space-resolved observation of population inversion in a He-like Al plasma pumped by fundamental and second-harmonic pulses of a Nd:glass laser
S Orimo; M Katsuragawa; T Ozaki; H Kuroda
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, OPTICAL SOC AMER, 13, 5, 788-793, May 1996, Time- and space-resolved spectra of laser-produced aluminum plasma are observed with a framing crystal x-ray spectrometer. A massive slab Al target is irradiated by the fundamental or second-harmonic laser pulse from a Nd:glass system at a peak intensity of 8.5 +/- 0.9 x 10(14) W/cm(2). Population inversion are observed between the 4 and 3 levels of He-like Al for fundamental pumps and also between the 3 and 2 levels for the second harmonics. The origin of the 3-2 inversion can be attributed to the higher initial electron density of the plasma produced by the second-harmonic pump. A discussion of reabsorption effects of the resonance line is given. (C) 1996 Optical Society of America
Scientific journal, English - Observation of population inversion in recombining Al plasma by time- and space-resolved x-ray spectroscopy
M Katsuragawa; J Itatani; S Orimo; T Ozaki; H Kuroda; A Sasaki
APPLIED PHYSICS LETTERS, AMER INST PHYSICS, 68, 11, 1479-1481, Mar. 1996, Time- and/or space-resolved spectra of laser-produced Al plasmas were investigated using a framing crystal x-ray spectrometer. Population inversion was directly observed between the n = 4 and n = 3 levels in He-like Al, and the correspondent numerical simulation well describes observed characteristics. Plasma evolution and their effects on inversion was shown on a Te-Ne map, and discussions on the optimum conditions based on the experiments and calculations are also given. (C) 1996 American Institute of Physics.
Scientific journal, English - Quantum interference in nonlinear optical processes using strong-field coupling in atomic hydrogen
M. Katsuragawa; G. Z. Zhang; R. S.D. Sihombing; Y. Ohta; K. Hakuta
Progress in Crystal Growth and Characterization of Materials, Elsevier Ltd, 33, 1-3, 359-362, 1996, Peer-reviwed, We have systematically analyzed the sum-frequency generation and multiphoton-ionization process with strong-field coupling and quantum interference, using atomic hydrogen as a test medium. Experimental results have well confirmed the theoretical predictions.
Scientific journal, English - Quantum interference in nonlinear optical processes using strong-field coupling in atomic hydrogen
M Katsuragawa; GZ Zhang; RSD Sihombing; Y Ohta; K Hakuta
PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS, PERGAMON-ELSEVIER SCIENCE LTD, 33, 1-3, 359-362, 1996, Peer-reviwed, We have systematically analyzed the sum-frequency generation and multiphoton-ionization process with strong-field coupling and quantum interference, using atomic hydrogen as a test medium. Experimental results have well confirmed the theoretical predictions.
Scientific journal, English - Quantum interference in nonlinear optical processes using strong-field coupling in atomic hydrogen
M Katsuragawa; GZ Zhang; RSD Sihombing; Y Ohta; K Hakuta
PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS, PERGAMON-ELSEVIER SCIENCE LTD, 33, 1-3, 359-362, 1996, We have systematically analyzed the sum-frequency generation and multiphoton-ionization process with strong-field coupling and quantum interference, using atomic hydrogen as a test medium. Experimental results have well confirmed the theoretical predictions.
Scientific journal, English - Stimulated Raman Scattering in Solid Hydrogen , XX International Quantum Electronics Conference
K. Hakuta; M. Katsuragawa; R. S; D. Sihombing; T. Momose; M. Suzuki
XX International Quantum Electronics Conference, 266-267, 1996, Peer-reviwed
International conference proceedings, English - SUM-FREQUENCY GENERATION USING STRONG-FIELD COUPLING AND INDUCED TRANSPARENCY IN ATOMIC-HYDROGEN
GZ ZHANG; M KATSURAGAWA; K HAKUTA; RI THOMPSON; BP STOICHEFF
PHYSICAL REVIEW A, AMERICAN PHYSICAL SOC, 52, 2, 1584-1593, Aug. 1995, The sum-frequency generation process using strong-field coupling and quantum interference is described systematically using atomic hydrogen both in theory and experiment. It is shown that strong coupling at the 3p-2s transition creates destructive interference to reduce the linear susceptibility at the resonant 3p<--1s transition. Simultaneously, two-photon coupling of the 2s and 1s states produces constructive interference to resonantly enhance the nonlinear susceptibility for sum-frequency generation at the 3p-->1s (Lyman-beta) transition. Experimental results clearly demonstrate the theoretical predictions. When the Rabi frequency for the 3p-2s coupling exceeds the Doppler tail of the medium, the photoion signals on resonance are suppressed significantly because of induced transparency. The generated Lyman-beta radiation grows rapidly by a factor of 250 at an atom density of 10(15) cm(-3) and interaction length of 3.5 cm, resulting in a conversion efficiency of 2 X 10(-4).
Scientific journal, English - Nonlinear Optics Using Strong-Coupling and Induced Transparency in Atomic Hydrogen
K. Hakuta; G. Z. Zhang; M. Katsuragawa; R. I. Thompson; B. P. Stoicheff
Proceedings of International Symposium on Atomic Coherence and Inversionless Optical Amplification, 23-26, 1995, Peer-reviwed
International conference proceedings, English - Study of Soft X-ray Lasers in the 42～46A region observed in He-like Al Plasma
H. Kuroda; M. Katsuragawa; T. Ozaki
122-129, 1992, Peer-reviwed
International conference proceedings, English - Study of Soft X-ray Lasers in the 42~46A region observed in He-like Al plasma
H. Kuroda; M. Katsuragawa; T. Ozaki
Japan-US Seminar on Physics of High Power Laser Matter Interactions, -, 1992, Peer-reviwed
International conference proceedings, English
MISC
- Engineering of nonlinear optical phenomena by manipulating relative phases of the relevant optical fields
大饗千彰; 大饗千彰; LIU W.; ZHENG J.; 佐藤昂大; 鈴木勝; 鈴木勝; 美濃島薫; 美濃島薫; 小川尚史; 高野哲至; 桂川眞幸; 桂川眞幸
2023, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 70th, 2436-7613, 202302257488551787 - Injection-locked nanosecond pulsed laser for the Ca+ and Ca LiDAR
Otose Megumi; Watanabe Tetsuhito; Hayashi Yuto; Ohae Chiaki; Katsuragawa Masayuki; Ejiri Mitsumu K.; Nakamura Takuji
The Japan Society of Applied Physics, 26 Aug. 2020, JSAP Annual Meetings Extended Abstracts, 2020.2, 737-737, Japanese, 2436-7613 - スペクトル離散性が極めて高い光周波数コムが拓く光学過程の新しい可能性
Masayuki Katsuragawa; Chiaki Ohae; Jian Zheng; Kaoru Minoshima
OPTRONICS, 10 Oct. 2017, OPTRONICS, 430, 10, 106-110, Japanese, Invited, Introduction scientific journal - Arbitrary Manipulation of Amplitude and Phase of a Broadband Coherent Radiation with a Highly-Discrete Spectrum
大饗 千彰; 吉井 一倫; GAVARA Trivikramarao; 桂川 眞幸
レーザー学会, Jun. 2017, レーザー研究 = The review of laser engineering : レーザー学会誌, 45, 6, 319-323, Japanese, 0387-0200, 40021244721, AN00255326 - 22pBK-8 光周波数分周と位相同期高調波光の生成
大饗 千彰; Suhaimi Nurul Sheeda; Gavara Trivikramarao; 中川 賢一; 洪 鋒雷; 桂川 眞幸
一般社団法人 日本物理学会, 2016, 日本物理学会講演概要集, 71, 0, 833-833, Japanese, 2189-079X, 110010056859, AA12721570 - BCI-2-2 Arbitrary designable coherent light source
Katsuragawa Masayuki; Jian Zheng; Yoshii Kazumichi; Itoh Kimihito
The Institute of Electronics, Information and Communication Engineers, 09 Sep. 2014, Proceedings of the Society Conference of IEICE, 2014, 1, "SS-53", Japanese, 110009882085, AN10489017 - 絶対周波数精度を転写したTHz周波数間隔のラマンコム発生
吉井一倫; 洪鋒雷; 桂川眞幸
Nov. 2011, レーザー研究（レーザー学会誌）, 39, 11, 836-841, Japanese, Peer-reviwed, Introduction other - 28aRB-1 Generation of broadband parametric stimulated-Raman-scattering in a Kagome-lattice hollow-core photonic crystal fiber
Katsuragawa M.; Raju Kanaka; Yoshii K.; Aoki H.; Kiran John A.; Wang Y. Y.; Couny F.; Benabid F.
The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66, 1, 221-221, Japanese, 1342-8349, 110008610500, AA11439205 - レーザー光の新しい極限化軸と光科学
桂川眞幸
Jan. 2009, レーザー研究（レーザー学会誌）1月号、「若手研究者の描く光科学研究の展望」特集号, 37, No. 1, Japanese, Peer-reviwed, Introduction other - 23aYE-10 Efficient Generation of Acoustic Phonons by Intense Two-wavelength Laser
Fujii Y.; Lee S.; Koizumi K.; Katsuragawa M.
The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63, 1, 912-912, Japanese, 1342-8349, 110007194312, AA11439205 - 21aRH-3 Efficient generation of broad Raman sidebands in a high-finesse cavity
Tanaka R.; Yokota H.; Matsuzawa T.; Suzuki T.; Fujii Y.; Katsuragawa M.
The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62, 2, 151-151, Japanese, 1342-8349, 110007143359, AA11439205 - 21pTQ-1 Generation and Applications of Intense Optical Beat-note of several gigahertz.
Fujii Y.; Kamikura H.; Lee S.; Katsuragawa M.
The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62, 2, 732-732, Japanese, 1342-8349, 110007142306, AA11439205 - 18pXG-1 Development of Injection-locked GHz-beat Pulsed Laser
Fujii Y.; Kamikura H.; Lee S.; Katsuragawa M.
The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62, 1, 941-941, Japanese, 1342-8349, 110007191620, AA11439205 - Stabilization of carrier frequency and enhancement of intensity with a high-finesse cavity designed for nanosecond pulsed laser
TANAKA R.; MATSUZAWA T.; YOKOTA H.; SUZUKI T.; FUJII Y.; KATSURAGAWA M.
02 Feb. 2007, レーザー学会研究会報告 = Reports on the Topical meeting of the Laser Society of Japan, 358, 19-23, Japanese, 10018498547, AA11604414 - ラマン過程の断熱操作と超短パルス光発生制御技術への展開
桂川眞幸
Jan. 2007, 応用物理, 76, 2, 125 – 132, Japanese, Peer-reviwed, Introduction other - 10-THz Repetition-Rate Ultrashort-Pulse Generation by Synthesizing Phase-Coherent Raman-Sidebands
Masayuki Katsuragawa; Takashi Onose; Keitaro Yokoyama; Kazuhiko Misawa
2006, Tecnical Digest of Quantum Electronic and Laser Science Conference 06, QFE1 - 固体水素を用いた新しい光学過程
桂川眞幸; 百瀬孝昌; 鈴木 勝; 是枝聡肇; 白田耕藏
2001, 光学, 30, 2, 111-116, Japanese, Peer-reviwed, Introduction other - 量子干渉効果による光学応答の制御
白田耕蔵; 桂川眞幸
1995, 光学, 24, 545-550, Japanese, Peer-reviwed, Introduction other
Books and other publications
- ユニーク＆エキサイティング サイエンス
桂川 眞幸
Japanese, Joint work, 第5章 非線形光学を極めて 新しいレーザーを創る 「光科学とレーザー技術の極限化」, 近代科学社, Mar. 2013 - 「Dreams in Optical Science 光科学の未来を拓く － さきがけ研究者たちの夢 －」
桂川眞幸
Japanese, Joint work, 量子コヒーレンスの断熱操作と超短パルス光発生への応用, 独立行政法人 科学技術振興機構(JST) 戦略的創造事業本部 研究推進部 発行, Mar. 2009 - プロフェッショナル英和辞典SPED TERRA
Japanese, Joint work, 小学館, Jul. 2004
Lectures, oral presentations, etc.
- Novel light sources for quantum sensors and simulators
T. Takano; H. Ogawa; W. Liu; C. Ohae; M. Katsuragawa
Poster presentation, English, Novel light sources for Quantum sensors and tests of new physics (QSNP), International conference
04 Oct. 2022 - TBD
C. Ohae; W. Liu; J. Zheng; M. Katsuragawa
Invited oral presentation, English, 15th Asia Pacific Physics Conference (APPC15), Invited, APPC15, Gyeongju, South Korea, Hybrid, International conference
22 Aug. 2022 - Tailored nonlinear optical frequency conversion; Toward high resolution spectroscopy in the vacuum ultraviolet wavelength region
M. Katsuragawa; C. Ohae; J. Zheng; W. Liu; M. Suzuki; K. Minoshima
Invited oral presentation, English, the International Conference on Ultrafast Optical Science (UltraFastLight), Invited, P. N. Lebedev Physical Institute of RAS, Moscow, Russia, International conference
Oct. 2018 - Tailored optics with a highly-discrete optical frequency comb; toward high resolution nonlinear spectroscopy in the vacuum ultraviolet wavelength region
C. Ohae; J. Zheng; K. Minoshima; M. Katsuragawa
Invited oral presentation, English, the VIII International Symposium on Modern Problems of Laser Physics (MPLP-2018), Invited, MPLP-2018, Novosibirsk, Russia, International conference
Aug. 2018 - Tailored nonlinear optical frequency conversion
M. Katsuragawa; J. Zheng; C. Ohae
Invited oral presentation, English, The international conference on Quantum & Nonlinear Optics (QNO2018), Invited, QNO2018, Kuala Lumpur, Malaysia, International conference
Feb. 2018 - Tailor made nonlinear optical frequency mixing and its application to optical devices
M. Katsuragawa; J. Zheng; C. Ohae
Invited oral presentation, English, 48-th Winter Colloquium on the Physics of Quantum Electronics, Invited, PQE-2018, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2018 - 光周波数の分周を軸にした光の極限制御
大饗千彰; 吉井一倫; Trivikramarao Gavara; 美濃島薫; 桂川眞幸
Invited oral presentation, Japanese, 第38回レーザー学会年次大会, レーザー学会, Domestic conference
Jan. 2018 - Linear and nonlinear optics with a highly-discrete optical frequency comb
M. Katsuragawa; C. Ohae; J. Zheng; C. Zhang; T. Gavara; M. Suzuki; K. Minoshima
Invited oral presentation, English, The 24th Congress of the International Comission for Optics (ICO-24), Invited, International Commission of Optics, Keio Plaza Hotel, Tokyo, Japan, International conference
Aug. 2017 - Tailored nonlinear optics - toward high resolution spectroscopy in the vacuum ultraviolet region -
M. Katsuragawa; J. Zheng; C. Ohae; K. Minoshima
Invited oral presentation, English, GINZBURG CENTENNIAL CONFERENCE ON PHYSICS, Precision Measurements, Constants and Tests of Fundamental Theories section, Invited, Lebedev Physical Institute, Moscow, Russia, International conference
Jun. 2017 - Injection-locked tunable continuous-wave laser and its application to generation of ultrafast pulses above 100-THz repetition rate
T. Gavara; C. Ohae; K. Nakagawa; K. Minoshima; M. Katsuragawa
Invited oral presentation, English, 26th International Laser Physics Workshop (LPHYS’17), Invited, Lebedev Physical Institute, Kasan, Russia, International conference
Jun. 2017 - Designability of optical processes composed of discrete spectrum
M. Katsuragawa; J. Zheng; C. Ohae
Invited oral presentation, English, 47-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2017, Invited, PQE-2017, Snowbird, Salt Lake City, Utah, USA, International conference
08 Jan. 2017 - Designability of optical processes composed of discrete spectrum
M. Katsuragawa; J. Zheng; C. Ohae
Invited oral presentation, English, 47-th Winter Colloquium on the Physics of Quantum Electronics, Invited, PQE-2017, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2017 - Attractive natures in a set of a highly discrete coherent spectrum
J. Zheng; C. Ohae; M. Katsuragawa
Invited oral presentation, English, The 9th INTERNATIONAL CONFERENCE ON PHOTONICS & APPLICATIONS (ICPA-9), Invited, ICPA-9, Ninh Binh City, Vietnam, International conference
06 Nov. 2016 - Generation and application of five phase-locked harmonics in the continuous wave regime
C. Ohae; N. S. Suhaimi; T. Gavara; K. Nakagawa; F. -L. Hong; K. Minoshima; M. Katsuragawa
Invited oral presentation, English, VI International Conference "Frontiers of Nonlinear Physics", Invited, International conference
17 Jul. 2016 - Generation and application of five phase-locked harmonics in the continuous wave regime
C. Ohae; N. S. Suhaimi; T. Gavara; K. Nakagawa; F. -L. Hong; K. Minoshima; M. Katsuragawa
Poster presentation, English, CLEO/QELS 2016, OSA, San Jose Convention Center, San Jose, California, USA, International conference
05 Jun. 2016 - Attractive natures in linear and nonlinear optical processes composed of a discrete spectrum
M. Katsuragawa; J. Zheng; C. Ohae; K. Itoh; K. Yoshii; M. Suzuki
Invited oral presentation, English, 45-th Winter Colloquium on the Physics of Quantum Electronics, Invited, PQE-2016, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2016 - Arbitrary designable optical frequency conversion
J. Zheng; M. Katsuragawa
Oral presentation, English, Frontiers in Optics/Laser Science Conference (FiO/LS), OSA, International conference
22 Oct. 2015 - Generation of 1.8 fs pulse train by simply controlling thickness of transparent-plates placed on the optical path
C. Zhang; K. Yoshii; M. Katsuragawa
Public symposium, English, The third international workshop MIPT/Lebedev (Moscow, Russia) – UEC (Tokyo, Japan), International conference
20 Oct. 2015 - Freely-designable nonlinear optical frequency conversion
C. Ohae; J. Zheng; K. Ito; M. Suzuki; M. Katsuragawa
Public symposium, English, The third international workshop MIPT/Lebedev (Moscow, Russia) – UEC (Tokyo, Japan), International conference
20 Oct. 2015 - Frequency division in the optical regime
C. Ohae; S. N. Suhaimi; Gavara T; K. Nakagawa; F. L. Hong; M. Katsuragawa
Invited oral presentation, English, 24th International Laser Physics Workshop, Invited, LPHYS’15, Shanghai Institute of Optics and Fine Mechanics, the Chinese Academy of Sciences, Shanghai, China, International conference
Aug. 2015 - Generation of a 1.8 fs pulse train by simply controlling transparent plate thickness placed on the optical path
K. Yoshii; Y. Nakamura; K. Hagihara; M. Katsuragawa
Invited oral presentation, English, 45-th Winter Colloquium on the Physics of Quantum Electronics, Invited, PQE-2015, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2015 - Optical frequency divider and its application in ultra-broadband Raman comb
N.Sheeda; C. Ohae; G. Trivikramarao; K. Yoshii; M. Katsuragawa
Public symposium, English, The second international workshop MIPT (Moscow, Russia) – UEC (Tokyo, Japan): atomic, molecular and optical physics, マレーシア、インド, International conference
Oct. 2014 - 任意にデザイン可能なコヒーレント光源
桂川眞幸; Jian Zheng; 吉井一倫; 伊藤公人
Invited oral presentation, Japanese, 電子情報通信学会、シンポジウム“光通信・光情報処理における光波計測・制御技術の進展”, 電子情報通信学会, 徳島大学, Domestic conference
Sep. 2014 - Attractive natures in a set of a highly discrete coherent spectrum
M. Katsuragawa
Keynote oral presentation, English, The 8th INTERNATIONAL CONFERENCE ON PHOTONICS & APPLICATIONS (ICPA-8), Invited, ICPA-8, Da Nang city, Vietnam, International conference
Aug. 2014 - 離散性の高いコヒーレントスペクトル群に現れる興味深い光学特性
桂川眞幸; 吉井一倫; Jian Zheng
Invited oral presentation, Japanese, 強光子場科学研究懇談会、平成26年度第3回懇談会, 強光子場科学研究懇談会, 電気通信大学, Domestic conference
Jul. 2014 - Adiabatic manipulation of quantum coherence and its application to extreme nonlinear optical processes
M. Katsuragawa; K. Yoshii
Oral presentation, English, The first international workshop IOP (Vietnam) – UEC (Tokyo, Japan), International conference
Mar. 2014 - Generation of a Train of Ultrashort Pulses by Simply Inserting Transparent Plates on the Optical Path
Kazumichi Yoshii; Yoshitaka Nakamura; Kohei Hagihara; Masayuki Katsuragawa
Oral presentation, English, CLEO/QELS 2014, International conference
2014 - Attractive natures in a set of a highly-discrete coherent spectrum
M. Katsuragawa
Invited oral presentation, English, 44-th Winter Colloquium on the Physics of Quantum Electronics, Invited, PQE-2014, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2014 - 二周波数可変ナノ秒注入同期レーザーとその利用
中野愉人; 小泉健太郎; 森田宇亮; 佐藤智信; 阿部浩二; 桂川眞幸
Invited oral presentation, Japanese, 第34回レーザー学会年次大会, Invited, レーザー学会, 北九州国際会議場（小倉市）, Domestic conference
Jan. 2014 - Ultrabroadband Raman Frequency Comb with absolute frequency control
Nural Sheeda Binti SUHAIMI; M. Katsuragawa
Oral presentation, English, The first international workshop MIPT (Moscow, Russia) ; UEC (Tokyo, Japan)atomic, molecular and optical physics. MIPT, International conference
Nov. 2013 - Raman comb generation with Continuous Wave Laser,
Trivikramarao GAVARA; M. Katsuragawa
Oral presentation, English, The first international workshop MIPT (Moscow, Russia) ; UEC (Tokyo, Japan)atomic, molecular and optical physics. MIPT, International conference
Nov. 2013 - A simple and attractive technique on manipulation of a highly-discrete coherent spectrum
M. Katsuragawa
Invited oral presentation, English, Workshop on THE RAMAN ROUTE FOR ATTOSCIENCE AND PHOTONIC WAVEFORM SYNTHESIS, Invited, CNRS and Limoges univ., Limoges, France, International conference
Sep. 2013 - Attractive natures of a Raman frequency comb in the time and frequency domains
M. Katsuragawa; K. Shiraga; M. Arakawa; K. Yoshii; F. L. Hong
Oral presentation, English, The 10th Conference on Lasers and Electro-Optics, Pacific Rim and 18th Optoelectronics and Communications Conference / Photonics in Switching 2013, Invited, International conference
Aug. 2013 - A simple and attractive technique on manipulation of a highly-discrete coherent spectrum
M. Katsuragawa
Oral presentation, English, Workshop on THE RAMAN ROUTE FOR ATTOSCIENCE AND PHOTONIC WAVEFORM SYNTHESIS, Invited, International conference
Aug. 2013 - Attractive natures of a Raman frequency comb in the time and frequency domains
M. Katsuragawa; K. Shiraga; M. Arakawa; K. Yoshii; F. L. Hong
Invited oral presentation, English, The 10th Conference on Lasers and Electro-Optics, Pacific Rim and 18th Optoelectronics and Communications Conference / Photonics in Switching 2013, CLEO-PR & OECC/PS 2013, International conference
Jul. 2013 - The novel route to generating of a train of attosecond pulses
Kazumichi Yoshii; John Kiran Anthony; Masayuki Katsuragawa
Oral presentation, English, UFO 2013, International conference
Mar. 2013 - Attosecond Temporal Shape Manipulation by Arbitrarily Designing Spectral Phases
K. Yoshii; N. Sheeda Suhaimi; M. Katsuragawa
Oral presentation, English, CLEO-PR & OECC/PS 2013, International conference
2013 - The simplest route to generating an attosecond pulse train
M. Katsuragawa
Oral presentation, English, 43-th Winter Colloquium on the Physics of Quantum Electronics
2013 - The simplest route to generating an attosecond pulse train
M. Katsuragawa
Oral presentation, English, 43-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2013, Snowbird, Salt Lake City, Utah, USA, International conference
2013 - 光周波数標準の精度を転写したラマンコム光源、シンポジウム「周波数コム光源とその計測応用への進展」
桂川眞幸
Invited oral presentation, Japanese, 第33回レーザー学会年次大会, Invited, レーザー学会, 姫路商工会議所（兵庫県姫路市）, Domestic conference
Jan. 2013 - Raman Comb With An accuracy Transferred from An Absolute Frequency
Nurul Sheeda Suhaimi; Kazumichi Yoshii; Takayuki Suzuki; Kentaro Shiraga; Masaki Arakawa; Feng-Lei Hong; Masayuki Katsuragawa
Oral presentation, English, IWLS
Oct. 2012 - Adiabatic driving of the maximal coherence at E2 transition
M. Katsuragawa; K. Yoshii
Invited oral presentation, English, 6th workshop on Fundamental Physics using Atoms 2012, Sendai, Japan, International conference
Sep. 2012 - Generation of trains of arbitrary waveforms and their repeated revivals
Masayuki Katsuragawa; Takayuki Suzuki; Kanaka Raju Pandiri
Oral presentation, English, Ultrafast Phenomena XVIII
Jul. 2012 - The Simplest Method for Generation of an Attosecond Pulse Train
Kazumichi Yoshii; John Kiran Anthony; Masayuki Katsuragawa
Oral presentation, English, Ultrafast Phenomena XVIII
Jul. 2012 - Coherent phonon frequency comb generated by few-cycle femtosecond pulses in Si
Muneaki Hase; Masayuki Katsuragawa; Anca Monia Constantinescu; Hrvoje Petek
Oral presentation, English, Ultrafast Phenomena XVIII
Jul. 2012 - 二周波数発振注入同期連続波チタンサファイアレーザー
大橋タケル; 佐々木祐介; 浜野紘明; 吉井一倫; 桂川眞幸
Oral presentation, Japanese, 応用物理学会,第59回応用物理学関係連合講演会
Mar. 2012 - 中空Photonic Crystal Fiber中に閉じ込めたパラ水素を媒質とするラマン型光コムの生成
桂川眞幸; 大橋タケル; 佐々木祐介; 吉井一倫; Y. Y. Wang; F. Couny; F. Benabid
Oral presentation, Japanese, 日本物理学会,日本物理学会2012年 年次大会
Mar. 2012 - ２周波数注入同期レーザーによる音響フォノン高密度励起と検出
中野諭人; 児玉雄太; 森田宇亮; 阿部浩二; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会2012年 年次大会
Mar. 2012 - 二周波数注入同期Ti:sapphire連続発振レーザーの開発、Bレーザー制御
佐々木祐介; 大橋タケル; 浜野紘明; 吉井一倫; 桂川眞幸
Oral presentation, Japanese, レーザー学会,レーザー学会第32回年次大会
Jan. 2012 - Toward broad Raman generation in the continuous wave regime
M. Katsuragawa
Invited oral presentation, English, 42-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2012, PQE-2012, Snowbird, Salt Lake City, Utah, USA, International conference
2012 - 波長選択可能な二波長同時連続発振レーザー
佐々木祐介; 大橋タケル; 浜野紘明; 吉井一倫; 桂川眞幸
Public symposium, Japanese, 電通大・農工大第8回合同シンポジウム, 東京
Dec. 2011 - 量子コヒーレンスの断熱操作とその非線形光学過程への応用
桂川真幸
Invited oral presentation, Japanese, 量子エレクトロニクス研究会：「非線形光学50年 その基礎と材料・デバイスおよび応用」, 応用物理学会
Dec. 2011 - 分子の量子コヒーレンス断熱操作によるラマンコムの生成とその高機能化
吉井一倫; 桂川眞幸
Public symposium, Japanese, 第４回文部科学省「最先端の光の創成を目指したネットワーク研究拠点プログラム」, 文部科学省
Nov. 2011 - 孤立系及び凝縮系における量子コヒーレンスの断熱操作
桂川眞幸
Others, Japanese, 岡山大学物理学科セミナー, 岡山大学
Nov. 2011 - 量子コヒーレンスの断熱操作によるラマンコムの生成とその高機能化
吉井一倫; 青木浩; 桂川眞幸
Others, Japanese, 先端フォトニクスシンポジウム, 日本学術会議
Oct. 2011 - THz-spaced Raman comb with an accuracy transferred from an absolute frequency
Kazumichi Yoshii; Masaki Arakawa; Kentaro Shiraga; Takeru Ohashi; Yusuke Sasaki; Feng-Lei Hong; Masayuki Katsuragawa
Public symposium, English, 国際）シンポジウム「光コムによる分光学の革命」, 産業総合技術研究所
Sep. 2011 - THz-spaced Raman comb with an accuracy transferred from an absolute frequency
Kazumichi Yoshii; Masaki Arakawa; Kentaro Shiraga; Takeru Ohashi; Yusuke Sasaki; Feng-Lei Hong; Masayuki Katsuragawa
Public symposium, English, 国際）シンポジウム「光コムによる分光学の革命」, 産業総合技術研究所, 茨城
Sep. 2011 - イントロダクトリートーク：分野横断･融合から創出される新しい光科学
桂川眞幸
Public symposium, Japanese, 2011年（平成23年）秋季第72回応用物理学会学術講演会, 応用物理学会, 山形
Aug. 2011 - 任意二周波数注入同期パルスによる水晶のコヒーレント音響フォノン励起
中野諭人; 森田宇亮; 阿部浩二; 桂川眞幸
Oral presentation, Japanese, 応用物理学会,2011年（平成23年）秋季第72回応用物理学会学術講演会
Aug. 2011 - Novel approach for generation of a train of ultrashort pulses by counterintuitively adding a positive dispersion
M. Katsuragawa; T. Suzuki; J. K. Anthony; K. R. Pandiri
Invited oral presentation, English, 20th International Laser Physics Workshop, Laser Physics, International conference
Jul. 2011 - 任意二周波数注入同期レーザーを用いた水晶のコヒーレント音響フォノン励起
中野諭人; 佐野光彦; 阿部浩二; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会第66回年次大会
Mar. 2011 - カゴメ格子中空フォトニック結晶ファイバー中における広帯域パラメトリック誘導ラマン散乱光発生
桂川眞幸; Kanaka Raju P; 吉井一倫; 青木浩; John Kiran A; Y. Y. Wang; F. Couny; F. Benabid
Oral presentation, Japanese, 日本物理学会第66回年次大会,日本物理学会
Mar. 2011 - 共振器内における断熱ラマンサイドバンド光発生
桂川眞幸; 田中涼; 横田浩之; 松澤卓
Invited oral presentation, Japanese, 2011年春季 第71回 応用物理学会関係連合講演会, 応用物理学会
Mar. 2011 - 超高繰り返し超短パルス光列の高感度スペクトル位相計測
大橋タケル; 佐々木祐介; 浜野紘明; 鈴木隆行; 吉井一倫; John Kian A; 桂川眞幸
Oral presentation, Japanese, レーザー学会
Jan. 2011 - 絶対位相制御フェムト秒パルス列による分子のイオン化過程と搬送波位相制御への応用
吉井一倫; 青木浩; 白神健太郎; John Kiran A; 洪鋒雷; 大村英樹; 桂川眞幸
Oral presentation, Japanese, レーザー学会
Jan. 2011 - Raman route to arbitrary optical waveform synthesis
Kanaka Raju Pandiri; Masayuki Katsuragawa
Oral presentation, English, レーザー学会
Jan. 2011 - 任意二波長注入同期パルスによる音響フォノン励起
中野諭人; 佐野光彦; 児玉雄太; 森田宇亮; 阿部浩二; 桂川眞幸
Oral presentation, Japanese, レーザー学会
Jan. 2011 - A Raman approach for ultrafast optical technology
M. Katsuragawa
Keynote oral presentation, English, 41-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2011, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2011 - 絶対位相が制御された超高繰返し超短パルス光列の発生と分子解離過程への応用
吉井一倫; 青木浩; 白神健太郎; John Kiran A; Kanaka Raju P; 浜野紘明; 大橋タケル; 佐々木祐介; 洪鋒雷; 大村英樹; 桂川眞幸
Public symposium, Japanese, 農工大・電通大第７回合同シンポジウム, 農工大・電通大第７回合同シンポジウム予稿集, 東京
Dec. 2010 - 絶対位相が制御された超高繰返し超短パルス光列の発生と分子解離過程への応用
吉井一倫; 青木浩; 白神健太郎; John Kiran A; Kanaka Raju P; 浜野紘明; 大橋タケル; 佐々木祐介; 洪鋒雷; 大村英樹; 桂川眞幸
Public symposium, Japanese, 農工大・電通大第７回合同シンポジウム
Dec. 2010 - テラビット域における新しい超高速光技術
桂川眞幸
Invited oral presentation, Japanese, 第６回超高速光エレクトロニクス研究会, 超高速光エレクトロニクス研究会
Dec. 2010 - 光周波数標準に安定化された超短パルス列の搬送波位相制御
吉井一倫; 青木浩; 白神健太郎; 洪鋒雷; 大村英樹; 桂川眞幸
Oral presentation, Japanese, 応用物理学会,第71回 応用物理学会学術講演会
Sep. 2010 - Raman comb from a parahydrogen filled kagome-lattice-type photonic crystal fiber
P. Kanaka Raju; 青木浩; John Kiran A; 吉井一倫; 桂川眞幸; Y. Y. Wang; F. Couny; F. Benabid
Oral presentation, English, 応用物理学会,2010年秋季第71回 応用物理学会学術講演会
Sep. 2010 - Ultrahigh repetition rate rectangular and triangular type optical waveform synthesis
P. Kanaka Raju; 桂川眞幸
Oral presentation, English, 2010年秋季 第71回 応用物理学会学術講演会
Sep. 2010 - 光周波数標準に位相同期されたラマンコムの生成
桂川眞幸; 白神健太郎; 荒川正樹; 洪鋒雷
Oral presentation, Japanese, 日本物理学会,日本物理学会2010年秋季大会
Sep. 2010 - Optical wave synthesizer realized with an adiabatic Raman process
M. Katsuragawa; K. R. Pandiri
Invited oral presentation, English, International Conference on Recent Frontiers in Applied Spectroscopy (ICORFAS-2010), International Conference on Recent Frontiers in Applied Spectroscopy (ICORFAS-2010), International conference
Sep. 2010 - Manipulation of Quantum coherence and its application to Arbitrary Optical Waveform generation
K. R. Pandiri; M. Katsuragawa
Invited oral presentation, English, The fifth Workshop of the Stimulated Brillouin Scattering and Phase Conjugation, The fifth Workshop of the Stimulated Brillouin Scattering and Phase Conjugation, International conference
Aug. 2010 - Octave-spanning Raman comb and its application to ultrafast optical technology
M. Katsuragawa
Invited oral presentation, English, 19th International Laser Physics Workshop (LPHYS'10), 19th International Laser Physics Workshop (LPHYS'10), Iguas Fall, Brasil, International conference
Jul. 2010 - 量子コヒーレンスの断熱操作と極限光技術への展開
桂川眞幸
Invited oral presentation, Japanese, 東北大学光科学技術フォーラム, 東北大学光科学技術フォーラム
Jun. 2010 - 選択的二波長発振注入同期レーザーによる高コヒーレンス音波生成
中野諭人; 小泉健太; 佐野光彦; 阿部浩二; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会第65回年次大会
Mar. 2010 - 共振器内で断熱生成されるラマン型光周波数コム
桂川眞幸; 田中涼; 横田浩之; 松澤卓
Oral presentation, Japanese, 日本物理学会,日本物理学会第65回年次大会
Mar. 2010 - Generation of 10-THz repetition-rate arbitrary optical waveform generation by line-by-line control of Raman sidebands
P. Kanaka Raju; 桂川眞幸
Oral presentation, English, 応用物理学関係連合,第57回応用物理学関係連合講演会
Mar. 2010 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Invited oral presentation, Japanese, 2010年春季第57回応用物理学関係連合講演会、シンポジウム：光科学の未来を拓く – Frontier and New Prospects in Optical Science –, 2010年春季第57回応用物理学関係連合講演会、シンポジウム：光科学の未来を拓く – Frontier and New Prospects in Optical Science –
Mar. 2010 - 量子コヒーレンスの断熱操作と超高速光技術への応用
桂川眞幸
Invited oral presentation, Japanese, 筑波大学物質科学セミナー, 筑波大学物質科学セミナー
Mar. 2010 - Efficient generation of Raman-type optical frequency comb in an enhancement cavity
M. Katsuragawa; R. Tanaka; H. Yokota; T. Matsuzawa
Invited oral presentation, English, 40-th Winter Colloquium on the Physics of Quantum Electronics, 40-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2010, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2010 - 量子コヒーレンスの断熱操作による絶対位相制御超短パルス光発生と分子制御への展開
青木浩; 白神健太郎; Kanaka Raju Pandiri; 澤山純樹; 大橋タケル; 桂川眞幸; 洪鋒雷
Public symposium, Japanese, 電通大・農工大第6回合同シンポジウム, 電通大・農工大第6回合同シンポジウム予稿集, 東京
Dec. 2009 - 高い波長選択性をもつ二波長発振注入同期レーザーの開発と高縮重度コヒーレントフォノンの生成
中野諭人; 小泉健太; 佐野光彦; 阿部浩二; 桂川眞幸
Public symposium, Japanese, 電通大・農工大第6回合同シンポジウム, 電通大・農工大第6回合同シンポジウム予稿集, 東京
Dec. 2009 - 量子コヒーレンスの断熱操作と超高速光技術への展開
桂川眞幸
Invited oral presentation, Japanese, 「超高速過程における量子コヒーレント現象の観測と制御 ～普遍性と多様性：量子情報処理から固体・生体分子ダイナミクス～」研究会, 東北大学理学部
Dec. 2009 - 光周波数標準に安定化された広帯域ラマン型周波数コムの生成
白神健太郎; 荒川 正樹; 洪 鋒雷; 桂川眞幸
Invited oral presentation, Japanese, 電気学会、精密周波数発生回路の新技術調査専門委員会, 電気学会、精密周波数発生回路の新技術調査専門委員会
Dec. 2009 - Adiabatic manipulation of quantum coherence and its application to extreme optical technologies
M. Katsuragawa
Invited oral presentation, English, The 3rd Asian Workshop on Generation and Applications of Coherent XUV and X-ray Radiation, The 3rd Asian Workshop on Generation and Applications of Coherent XUV and X-ray Radiation (Under the aegis of the Asian Intense Laser Network), Wuhan, China, International conference
Jun. 2009 - Octave-spanning Optical Frequency Comb Produced via Adiabatic Raman process
M. Katsuragawa
Invited oral presentation, English, The international conference on laser spectroscopy: ICOLS 2009, The international conference on laser spectroscopy: ICOLS 2009, Teshikaga, Hokkaido, Japan, International conference
Jun. 2009 - 量子コヒーレンスの断熱操作と極限光技術への展開
桂川眞幸
Invited oral presentation, Japanese, 東京大学物性研究所 先端レーザー分光部門セミナー, 東京大学物性研究所 先端レーザー分光部門セミナー
Jun. 2009 - Octave-spanning Raman comb stabilized to an optical frequency standard
M. Katsuragawa; F. L. Hong; T. Suzuki; M. Arakawa
Invited oral presentation, English, 10 Years of Frequency Combs CLEO Symposium II, CLEO, International conference
May 2009 - 量子コヒーレンスの断熱操作と極限光技術への展開
桂川眞幸
Invited oral presentation, Japanese, エクストリームフォトニクスセミナー, エクストリームフォトニクスセミナー
May 2009 - 光科学の展望
桂川眞幸
Public symposium, Japanese, シンポジウム：光科学の未来を拓く-Frontier and New Prospects in Optical Science-, 第56回応用物理学関係連合講演会, 茨城
Mar. 2009 - Generation of octave-spanning Raman comb stabilized to an optical frequency standard
桂川眞幸
Invited oral presentation, Japanese, 第56回応用物理学関係連合講演会 シンポジウム：光科学の未来を拓く-Frontier and New Prospects in Optical Science-, 第56回応用物理学関係連合講演会
Mar. 2009 - Octave-spanning Raman comb stabilized to an optical frequency standard
M. Katsuragawa; F. L. Hong; M. Arakawa; T. Suzuki
Invited oral presentation, English, 39-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2009, , Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2009 - 研究紹介・特別セミナー
M. Katsuragawa
Others, English, イギリスBath大学、中国上海光機所、にて研究紹介・特別セミナー
2009 - 周波数標準に安定化された広帯域ラマンコムの発生
白神健太郎; 荒川正樹; 洪鋒雷; 鈴木隆行; 桂川眞幸
Public symposium, Japanese, 農工大・電通大第5回合同シンポジウム, 東京
Dec. 2008 - Octave-spanning Raman comb stabilized to an optical frequency standard
M. Katsuragawa; F. L. Hong; M. Arakawa; T. Suzuki
Invited oral presentation, English, The 8th Asian International Seminar on Atomic and Molecular Physics, AISAMP2008, International conference
Nov. 2008 - 光共振器を利用した低閾値ラマンサイドバンド光発生
田中 涼; 横田浩之; 三尾彰寛; 鈴木隆行; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会2008秋季大会
Sep. 2008 - 光周波数標準に安定化されたラマンサイドバンド光の発生
白神健太郎; 鈴木隆行; 桂川眞幸
Oral presentation, Japanese, 応用物理学関係連合講演会
Sep. 2008 - Generation of ultrashort pulse train by line-by-line control of spectral phase of broad Raman sidebands
P. Kanaka Raju; T. Suzuki; M. Katsuragawa; A. Suda; K. Midorikawa
Oral presentation, English, 応用物理学会,第70回 応用物理学会 学術講演会
Sep. 2008 - 高い波長選択性をもつ二波長発振注入同期ナノ秒パルスレーザーの開発
小泉健太; 中野諭人; 小野瀬貴士; 阿部浩二; 桂川眞幸
Oral presentation, Japanese, 応用物理学会,第70回 応用物理学会 学術講演会
Sep. 2008 - コヒーレントフォノン励起に向けた二波長発振注入同期パルスレーザーの開発
中野諭人; 小泉健太; 小野瀬貴士; 阿部浩二; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会2009年秋季大会
Sep. 2008 - 光周波数標準に安定化されたラマンサイドバンド光の発生
白神健太郎; 鈴木隆行; 桂川眞幸
Oral presentation, Japanese, 応用物理学関係連合講演会, 応用物理学関係連合講演会
Sep. 2008 - Generation of octave-spanning Raman comb stabilized to an optical frequency standard
M. Katsuragawa; F. L. Hong; M. Arakawa; T. Suzuki
Invited oral presentation, English, Ultrafast Phenomena 2008, Ultrafast Phenomena 2008, EPS, International conference
Jun. 2008 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Public symposium, Japanese, さきがけ「光の創成・操作と展開」領域会議（第5回）, 科学技術振興機構
May 2008 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Public symposium, Japanese, さきがけ「光の創成・操作と展開」領域会議（第5回）, 科学技術振興機構
May 2008 - 光周波数標準に安定化された広帯域ラマンサイドバンド光の発生
桂川眞幸; 洪鋒雷; 荒川正樹; 鈴木隆行; 白神健太郎
Oral presentation, Japanese, 日本物理学会,日本物理学会第63回年次大会
Mar. 2008 - 高強度２波長レーザーによる音響フォノンの高密度励起
藤井康裕; 李承龍; 小泉健太郎; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会第63回年次大会
Mar. 2008 - 87Rb原子の二光子遷移によるリュードベルグ状態の分光II
福泉美穂; 玉木嘉人; 桂川眞幸; 中川賢一
Oral presentation, Japanese, 日本物理学会,日本物理学会第63回年次大会
Mar. 2008 - SPIDER法の応用によるラマンサイドバンド光の位相計測
澤山純樹; 鈴木隆行; 桂川眞幸
Oral presentation, Japanese, 第55回応用物理学関係連合講演会
Mar. 2008 - 二波長発振ナノ秒パルスレーザー光の高フィネス共振器への安定閉じ込め
三尾彰寛; 松澤 卓; 横田浩之; 田中 涼; 鈴木隆行; 藤井康裕; 桂川眞幸
Oral presentation, Japanese, 27p-P4-9
Mar. 2008 - 高フィネス共振器を用いたラマンサイドバンド光の高効率発生
田中 涼; 横田浩之; 三尾彰寛; 松澤 卓; 鈴木隆行; 藤井康裕; 桂川眞幸
Oral presentation, Japanese, 応用物理学関係連合,第55回応用物理学関係連合講演会
Mar. 2008 - Adiabatic manipulation of Raman process and its application to novel coherent light source
M. Katsuragawa; T. Suzuki; F. L. Hong; M. Suzuki
Invited oral presentation, English, First International Symposium on Interdisciplinary Materials Science (ISIMS-2008), ISIMS-2008, Tsukuba, Japan, International conference
Mar. 2008 - 量子コヒーレンスの断熱操作と超短パルス光発生への応用
桂川眞幸
Invited oral presentation, Japanese, 分子研コロキウム, 自然科学研究機構 分子科学研究所
Mar. 2008 - コールドキャビティーを利用したラマンサイドバンド光の周波数制御
鈴木隆行; 平井雅尊; 田中 涼; 桂川眞幸
Invited oral presentation, Japanese, 第55回応用物理学関係連合講演会, 応用物理学会
Mar. 2008 - 量子コヒーレンスの断熱操作と超短パルス光発生への応用
桂川眞幸
Invited oral presentation, Japanese, 分子研コロキウム, 自然科学研究機構 分子科学研究所
Mar. 2008 - ラマンコヒーレンスの断熱操作によるアト秒パルス光の発生
桂川眞幸
Oral presentation, Japanese, 第一回「アト秒量子ダイナミクス」研究会
Jan. 2008 - Octave-spanning Raman comb generation with absolute phase control
M. Katsuragawa; T. Suzuki; F. L. Hong; M. Suzuki
Invited oral presentation, English, 38-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2008, 38-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2008, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2008 - Optical arbitrary waveform generation using spectral line-by-line control of broad Raman sidebands,
Takayuki Suzuki; Kanaka Raju Pandiri; Masaki Arakawa; Feng-Lei Hong; Kazuhiko Misawa; Masayuki Katsuragawa
Oral presentation, English, 電気通信大学・東京農工大学第4回合同シンポジウム予稿集,電気通信大学・東京農工大学第4回合同シンポジウム「コヒーレント光科学とナノ未来材料」
Dec. 2007 - Ultrafast atomic and molecular dynamics in intense laser fields
豊田広大; 松永浩和; 伊藤新助; Oleg. I. Tolstikhin; 森下亨; 渡辺信一; 鈴木隆行; 桂川眞幸
Oral presentation, Japanese, 電気通信大学・東京農工大学第4回合同シンポジウム予稿集,電気通信大学・東京農工大学第4回合同シンポジウム「コヒーレント光科学とナノ未来材料」
Dec. 2007 - 量子コヒーレンスの断熱性と極限的超短パルス光の発生
桂川眞幸
Oral presentation, Japanese, 小林孝嘉教授（電気通信大学）研究室セミナー
Dec. 2007 - 量子コヒーレンスの断熱性と極限的超短パルス光の発生
桂川眞幸
Others, Japanese, 小林孝嘉教授（電気通信大学）研究室セミナー, 電気通信大学
Dec. 2007 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Oral presentation, Japanese, さきがけ「光の創成・操作と展開」領域会議（第4回）, 科学技術振興機構
Nov. 2007 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Public symposium, Japanese, さきがけ「光の創成・操作と展開」領域会議（第4回）, 科学技術振興機構
Nov. 2007 - 断熱ラマン過程を用いて生成する絶対位相制御超短パルス光列
桂川眞幸; 鈴木隆行; 平井雅尊; 荒川正樹; 洪鋒雷
Invited oral presentation, Japanese, 高速光エレクトロニクス研究会、平成19年度第3回研究会、「極短波長・超短パルス光の発生と応用」, 電子情報通信学会
Nov. 2007 - 量子コヒーレンスの断熱生成とその超短パルス光発生・制御への応用
桂川眞幸
Invited oral presentation, Japanese, 北海道大学COE「エンレイソウの会」
Nov. 2007 - 最大コヒーレンスの断熱生成と短波長超短パルス光発生への応用
桂川眞幸
Invited oral presentation, Japanese, 物性研研究会、「短波長コヒーレント光と物質中のコヒーレンスの生成・消滅」, 物性研研究会、「短波長コヒーレント光と物質中のコヒーレンスの生成・消滅」
Nov. 2007 - キャリアエンベロープオフセットを制御した広帯域ラマンサイドバンド光の発生
平井雅尊; 鈴木隆行; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会第62回年次大会
Sep. 2007 - 高強度GHzビート光の発生とその応用
藤井康裕; 上倉穂高; 李承龍; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会第62回年次大会
Sep. 2007 - 高フィネス共振器によるラマンサイドバンド光発生の高効率化
田中 涼; 横田 浩之; 松澤卓; 鈴木隆行; 藤井康裕; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会第62回年次大会
Sep. 2007 - ナノ秒パルスの高フィネス共振器への安定閉じ込め
横田 浩之; 田中 涼; 松澤卓; 鈴木隆行; 藤井康裕; 桂川眞幸
Oral presentation, Japanese, 応用物理学会,第68回応用物理学会学術講演会
Sep. 2007 - ラマンサイドバンド光の超広帯域化と自発的搬送波位相の固定
鈴木隆行; 平井雅尊; 桂川眞幸
Oral presentation, Japanese, 応用物理学会,第68回応用物理学会学術講演会
Sep. 2007 - 常温分子の断熱励起による高次ラマンサイドバンド光の発生
鈴木隆行; 田中 涼; 澤山純樹; 桂川眞幸
Oral presentation, Japanese, 分子科学討論会,第１回分子科学討論会2007仙台
Sep. 2007 - Generation of an octave-spanning Raman comb with carrier-envelope-phase control
M. Katsuragawa; T. Suzuki; M. Arakawa; F. L. Hong
Invited oral presentation, English, Asian Core program "Frontiers on material, photo-, and theoretical molecular sciences", Asian Core program "Frontiers on material, photo-, and theoretical molecular sciences", Kobe, Japan, International conference
Sep. 2007 - Generation of an octave-spanning Raman comb with carrier-envelope- control
M. Katsuragawa; T. Suzuki
Public symposium, English, Kansas State University, Kansas, USA
Aug. 2007 - Generation of an octave-spanning Raman comb with carrier-envelope-offset control
M. Katsuragawa; T. Suzuki; T. Onose; K. Misawa; F. Hong; A. Onae
Invited oral presentation, English, SPIE "Optics & Photonics 2007", "Time and Frequency Metrology" conference, SPIE "Optics & Photonics 2007", "Time and Frequency Metrology" conference, San Diego, California, USA, International conference
Aug. 2007 - 分子光変調方式による新しい超短パルス光源の開発
桂川眞幸
Others, Japanese, 第3回 産学官連携DAY in電通大、地域・産学官連携推進機構、産学官等連携推進本部ベンチャー創出支援部門（SVBL）、平成18年度 研究成果報告会
Jun. 2007 - Chii-Dong Linフェムト秒パルスによる水素分子の高次高調波発生
松永浩和; 森下亮; 渡辺信一; 鈴木隆行; 桂川眞幸
Oral presentation, Japanese, 第4回AMO討論会
Jun. 2007 - 分子光変調方式による新しい超短パルス光源の開発
桂川眞幸
Others, Japanese, 第3回 産学官連携DAY in電通大、地域・産学官連携推進機構、産学官等連携推進本部ベンチャー創出支援部門（SVBL）、平成18年度 研究成果報告会
Jun. 2007 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Public symposium, Japanese, さきがけ「光の創成・操作と展開」領域会議（第3回）, 科学技術振興機構
Apr. 2007 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Oral presentation, Japanese, さきがけ「光の創成・操作と展開」領域会議（第3回）
Apr. 2007 - 断熱励起ラマンサイドバンド光の周波数分解自己相関計測
鈴木隆行; 小野瀬貴士; 三沢和彦; 鈴木勝; 桂川眞幸
Oral presentation, Japanese, 日本物理学会2007年春季大会
Mar. 2007 - 第2高調波を利用したラマンサイドバンド光の広帯域化
鈴木隆行; 平井雅尊; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会2007年春季大会
Mar. 2007 - GHzビート光注入同期パルスレーザーの開発
藤井康裕; 上倉穂高; 李承龍; 桂川眞幸
Oral presentation, Japanese, 日本物理学会,日本物理学会2007年春季大会
Mar. 2007 - 縦モード間隔広帯域可変光コム注入同期レーザー
上倉穂高; 桂川眞幸; 高坂繁弘; 小関泰之
Oral presentation, Japanese, レーザー学会,レーザー学会第358回研究会「レーザー計測その他」
Feb. 2007 - 高フィネス共振器によるナノ秒パルスの搬送周波数安定化と高強度化
田中涼; 松澤卓; 横田浩之; 鈴木隆行; 藤井康裕; 桂川眞幸
Oral presentation, Japanese, レーザー学会,レーザー学会第358回研究会「レーザー計測その他」
Feb. 2007 - 高フィネス共振器によるナノ秒パルスの搬送周波数安定化と高強度化
田中涼; 松澤卓; 横田浩之; 鈴木隆行; 藤井康裕; 桂川眞幸
Oral presentation, Japanese, レーザー学会,レーザー学会第358回研究会「レーザー計測その他」
Feb. 2007 - Optical synthesis with broad Raman sidebands, - Toward subfemtosecond regime -
M. Katsuragawa; T. Suzuki; T. Onose; K. Misawa; M. Suzuki
Invited oral presentation, English, 37-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2007, 37-th Winter Colloquium on the Physics of Quantum Electronics, PQE-2005, , Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2007 - 周波数分解自己相関計測法を用いた超高繰り返し超短パルス列の評価
小野瀬貴士; 鈴木隆行; 桂川眞幸; 三沢和彦
Oral presentation, Japanese, 東京農工大学・電気通信大学２１世紀COEプログラム合同シンポジウム予稿集
Dec. 2006 - 注入同期レーザーを用いたコヒーレントフォノンの高密度生成
藤井康裕; 小野瀬貴士; 李承龍; 上倉穂高; 桂川眞幸
Oral presentation, Japanese, 東京農工大学・電気通信大学２１世紀COEプログラム合同シンポジウム予稿集,東京農工大学・電気通信大学２１世紀COEプログラム合同シンポジウム「ナノ未来材料とコヒーレント光科学」
Dec. 2006 - 時空間波形制御の開拓
三沢和彦; 桂川眞幸; 覧具博義
Oral presentation, Japanese, 東京農工大学・電気通信大学２１世紀COEプログラム合同シンポジウム「ナノ未来材料とコヒーレント光科学」
Dec. 2006 - ラマンサイドバンドを応用した超高繰り返しパルス列の発生と分子制御への応用
鈴木隆行; 桂川眞幸
Oral presentation, Japanese, 分子構造総合討論会
Sep. 2006 - 160GHｚ繰り返し注入同期パルスレーザー
上倉穂高; 佐藤宏之; 桂川眞幸; 高坂繁弘; 小関泰之
Oral presentation, Japanese, 26aWB-14,160GHｚ繰り返し注入同期パルスレーザー
Sep. 2006 - 広帯域ラマンサイドバンド光の周波数位相計測と制御
小野瀬貴士; 三沢和彦; 鈴木勝; 鈴木隆行; 桂川眞幸
Oral presentation, Japanese, 26aWB-2,日本物理学会秋の分科会
Sep. 2006 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Invited oral presentation, Japanese, さきがけ「光と制御」領域会議（第10回）, さきがけ「光と制御」領域会議（第10回）
Sep. 2006 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Public symposium, Japanese, さきがけ「光と制御」領域会議（第10回）, 科学技術振興機構
Jul. 2006 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Public symposium, Japanese, さきがけ「光と制御」領域会議（第10回）, 科学技術振興機構
Jul. 2006 - Ultrashort pulse generation by Fourier synthesis of Raman sidebands; Toward attosecond regime
M. Katsuragawa
Invited oral presentation, English, CCFP 2006 (The Conference on Coherent Control of the Fundamental Processes in Optics and X-ray-Optics), CCFP 2006(The Conference on Coherent Control of the Fundamental Processes in Optics and X-ray-Optics), Nizhny Novgorod, Russia, International conference
Jul. 2006 - 量子コヒーレンスの断熱操作と極限レーザー技術への展開
桂川眞幸
Invited oral presentation, Japanese, 日本光学会（応用物理学会）光波シンセシス研究グループ主催第11回研究会, 日本光学会
Jul. 2006 - 160GHz繰り返し注入同期ナノ秒パルスチタンサファイアレーザー
上倉穂高; 佐藤宏之; 桂川眞幸; 高坂繁弘; 小関泰之
Oral presentation, Japanese, レーザー・量子エレクトロニクス研究会
Jun. 2006 - 量子コヒーレンスによる光周波数変調システムの開発
桂川眞幸; 小野瀬貴士; 上倉穂高; 松澤卓
Oral presentation, Japanese, 電気通信大学 サテライト･ベンチャー･ビジネス･ラボラトリー平成17年度 研究成果報告会
Jun. 2006 - 量子コヒーレンスによる光周波数変調システムの開発
桂川眞幸; 小野瀬貴士; 上倉穂高; 松澤卓
Oral presentation, Japanese, 電気通信大学 サテライト･ベンチャー･ビジネス･ラボラトリー平成17年度 研究成果報告会
Jun. 2006 - 160GHz繰り返し注入同期ナノ秒パルスチタンサファイアレーザー
上倉穂高; 佐藤宏之; 桂川眞幸; 高坂繁弘; 小関泰之
Oral presentation, Japanese, レーザー・量子エレクトロニクス研究会
Jun. 2006 - 極限超短パルスレーザー光と光科学のフロンティア
桂川眞幸
Invited oral presentation, Japanese, 第3回AMO討論会（東京大学駒場キャンパス）, 第3回AMO討論会
Jun. 2006 - 10-THz repetition-rate ultrashort-pulse generation by synthesizing phase-coherent Raman-sidebands
M. Katsuragawa; T. Onose; K. Yokoyama; K. Misawa
Invited oral presentation, English, CLEO/QELS 2006, CLEO/QELS 2006, Long Beach, California, USA, International conference
May 2006 - 160GHz繰り返し注入同期パルスレーザー
上倉穂高; 佐藤宏之; 桂川眞幸; 高坂繁弘; 小関泰之
Oral presentation, Japanese, レーザー学会,第６回レーザー学会東京支部研究会 電気学会・量子デバイス研究会
Mar. 2006 - ラマンコヒーレンスの断熱生成と超高繰り返し超短パルス光発生への応用
桂川眞幸
Invited oral presentation, Japanese, 物理学会 2006年
Mar. 2006 - 分子光変調による超高繰り返し超短パルス光の発生
桂川眞幸
Oral presentation, Japanese, さきがけ「光の創成・操作と展開」領域会議（第１回）
Feb. 2006 - 最大コヒーレンス分子の断熱生成と光デバイスとしての応用
桂川眞幸; 小野瀬貴士; 三沢和彦
Invited oral presentation, Japanese, レーザー学会学術講演会第26回年次大会
Feb. 2006 - Development of Dual-Wavelength Injection-Locked Pulsed Laser and its Application to Generation of an Ultrahigh-Repetition-Rate Train of Ultrashort Pulses
T. Onose; M. Katsuragawa; K. Misawa
Oral presentation, English, Advanced Solid State Photonics
Jan. 2006 - Adiabatic manipulation of high density molecular ensemble and its application to ultrshort pulse generation
T. Onose; M. Katsuragawa; K. Misawa
Oral presentation, English, International Seminar on Progress and Excitement in AMO Physics
Jan. 2006 - 広帯域光・量子波束の位相制御
三沢和彦; 堀越建吾; 桂川眞幸; 覧具博義
Oral presentation, Japanese, 電気通信大学・東京農工大学２１世紀COEプログラム合同シンポジウム「ナノ未来材料とコヒーレント光科学」
Dec. 2005 - 量子コヒーレンスの断熱操作と光波制御
上倉穂高; 桂川眞幸; 高坂繁弘; 小関泰之
Oral presentation, Japanese, 電気通信大学・東京農工大学２１世紀COEプログラム合同シンポジウム「ナノ未来材料とコヒーレント光科学」
Dec. 2005 - 二波長注入同期ナノ秒パルスレーザーの開発と超高繰り返し超短パルス光発生への応用
小野瀬貴士; 桂川眞幸; 三沢和彦
Oral presentation, Japanese, 電気通信大学・東京農工大学２１世紀COEプログラム合同シンポジウム「ナノ未来材料とコヒーレント光科学」
Dec. 2005 - ラマンサイドバンド光のフーリエ合成による超短パルス光の発生
桂川眞幸
Oral presentation, Japanese, 基盤の研究会＃２「超精密計測が拓く新しいAMO科学」
Dec. 2005 - ラマンサイドバンド光のフーリエ合成による超短パルス光の発生
桂川眞幸
Oral presentation, Japanese, 基盤の研究会＃２「超精密計測が拓く新しいAMO科学」
Oct. 2005 - ラマンサイドバンド光のフーリエ合成による10THz繰り返し超短パルス光の発生
小野瀬貴士; 横山恵太郎; 桂川眞幸; 三沢和彦
Oral presentation, Japanese, 2005年秋季第66回応用物理学会学術講演会
Sep. 2005 - 光周波数コム注入同期パルスチタンサファイアレーザーⅡ
上倉穂高; 佐藤宏行; 桂川眞幸; 高坂 繁弘; 小関 泰之
Oral presentation, Japanese, 2005年秋季第66回応用物理学会学術講演会
Sep. 2005 - ラマンサイドバンド光のフーリエ合成による超高繰り返し超短パルス光の発生
桂川眞幸; 三沢和彦; 小野瀬貴士
Oral presentation, Japanese, 日本物理学会2005年秋季大会
Sep. 2005 - ***
三沢和彦; 堀越健悟; Roy Lang; 桂川眞幸
Oral presentation, Japanese, 21世紀COE“ナノ未来材料“コロキウム、平成17年度COE第一回発表会
Aug. 2005 - Generation of a 10-THz ultrahigh-repetition-rate train by synthesizing phase-coherent Raman-sidebands
M. Katsuragawa; K. Misawa; K. Yokoyama; T. Onose
Oral presentation, English, 21 century COE international symposium
Jul. 2005 - A two-wavelength injection-locked pulsed Ti:sapphire laser
T. Onose; M. Katsuragawa
Oral presentation, English, IQEC/CLEO-PR
Jun. 2005 - 10.6-THz repetition-rate, 21-fs ultrashort-pulse generation
M. Katsuragawa; K. Misawa; K. Yokoyama; T. Onose
Oral presentation, English, IQEC/CLEO-PR 2005
Jun. 2005 - Dual-wavelength injection-locked pulsed Ti:sapphire laser
M. Katsuragawa; T. Onose
Oral presentation, English, CLEO/Europe-EQEC 2005
Jun. 2005 - 光周波数コム注入同期パルスチタンサファイアレーザー
茂木治; 上倉穂高; 佐藤宏行; 桂川眞幸; 高坂 繁弘; 小関 泰之
Oral presentation, Japanese, 2005年春季第52回応用物理学関係連合講演会
Mar. 2005 - 10THz高繰り返し超短パルス光の発生
桂川眞幸; 三沢和彦; 横山恵太郎; 小野瀬貴士
Oral presentation, Japanese, 日本物理学会第60回年次大会
Mar. 2005 - Dual wavelength injection locked pulsed Ti:sapphire laser
T. Onose; M. Katsuragawa
Oral presentation, English, International Seminar on Atomic Process
Jan. 2005 - Ultrashort pulse generation using coherent molecular oscillation
M. Katsuragawa
Invited oral presentation, English, 35-th Winter Colloquium on the Physics of Quantum Electronics, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2005 - Adiabatic manipulation of Raman coherence and ultrashort pulse generation, International Seminar on Atomic Process
M. Katsuragawa
Invited oral presentation, English, International Seminar on Atomic Process, Shonan Village Center, Zushi, Miuragun, Kanagawa, International conference
Jan. 2005 - 量子コヒーレンスの断熱操作と光波制御
桂川眞幸
Oral presentation, Japanese, 東京農工大学・電気通信大学２１世紀COEプログラム合同シンポジウム「ナノ未来材料とコヒーレント光科学」
Dec. 2004 - フェムト秒チャープ可変装置の光位相制御への応用
三沢和彦; 桂川眞幸; 覧具博義
Oral presentation, Japanese, 東京農工大学・電気通信大学２１世紀COEプログラム合同シンポジウム「ナノ未来材料とコヒーレント光科学」
Dec. 2004 - 注入同期波長可変パルスレーザー：多波長発振への拡張
小野瀬貴士; 桂川眞幸
Oral presentation, Japanese, 東京農工大学・電気通信大学２１世紀COEプログラム合同シンポジウム「ナノ未来材料とコヒーレント光科学」
Dec. 2004 - コヒーレント分子振動子による光変調と超短パルス光発生
横山恵太郎; 小野瀬貴士; 桂川眞幸; 三沢和彦
Oral presentation, Japanese, 東京農工大学・電気通信大学２１世紀COEプログラム合同シンポジウム「ナノ未来材料とコヒーレント光科学」
Dec. 2004 - 量子コヒーレンスの断熱生成の物理
桂川眞幸
Invited oral presentation, Japanese, 第6回超高速光エレクトロニクス研究会
Nov. 2004 - 二波長発振注入同期パルスレーザーの開発
桂川眞幸; 小野瀬貴士
Oral presentation, Japanese, 日本物理学会2004年秋季大会
Sep. 2004 - 回転ラマンコヒーレンスの断熱生成の効率化と安定化
横山恵太郎; 桂川眞幸; 白田耕藏
Oral presentation, Japanese, 秋季第65回応用物理学学術講演会
Sep. 2004 - 光ソリトン注入同期パルスチタンサファイアレーザー
茂木治; 佐藤宏行; 桂川眞幸
Oral presentation, Japanese, 秋季第65回応用物理学学術講演会
Sep. 2004 - 二波長発振注入同期パルスレーザーシステムの開発II
小野瀬貴士; 桂川眞幸
Oral presentation, Japanese, 秋季第65回応用物理学学術講演会
Sep. 2004 - Comb generation of collinear Raman sidebands by three correlated coherent molecular oscillations
M. Katsuragawa; Y. Ono; Fam Le Kien; K. Hakuta
Oral presentation, English, CLEO/IQEC 2004
May 2004 - 量子コヒーレンスによる光周波数変調システムの開発
杉山陽亮; 横山恵太郎; 小野瀬貴士; 桂川眞幸
Oral presentation, Japanese, 電気通信大学 サテライト･ベンチャー･ビジネス･ラボラトリー平成15年度 研究成果報告会
Mar. 2004 - 二波長発振注入同期パルスレーザーシステムの開発
小野瀬貴士; 桂川眞幸
Oral presentation, Japanese, 第51回応用物理学関係連合学術講演会
Mar. 2004 - 分子コヒーレンスによる光変調と制御
桂川眞幸; 横山恵太郎; 小野瀬貴士; 白田耕藏
Oral presentation, Japanese, 日本物理学会第59回年次大会
Mar. 2004 - 量子コヒーレンスによる光周波数変調システムの開発
杉山陽亮; 横山恵太郎; 小野瀬貴士; 桂川眞幸
Oral presentation, Japanese, 電気通信大学 サテライト･ベンチャー･ビジネス･ラボラトリー平成15年度 研究成果報告会
Mar. 2004 - 分子コヒーレンスによる新しい光変調法
横山恵太郎; 杉山陽亮; 小野瀬貴士; 桂川真幸
Oral presentation, Japanese, レーザー学会 第320回研究会
Feb. 2004 - 分子コヒーレンスによる新しい光変調法
横山恵太郎; 杉山陽亮; 小野瀬貴士; 桂川真幸
Oral presentation, Japanese, レーザー学会 第320回研究会
Feb. 2004 - Frequency modulation of light using three correlated Raman coherences
M. Katsuragawa
Invited oral presentation, English, 34-th Winter Colloquium on the Physics of Quantum Electronics, Snowbird, Salt Lake City, Utah, USA, International conference
Jan. 2004 - 分子コヒーレンスの断熱生成と光変調への応用
桂川眞幸
Oral presentation, Japanese, 電気通信大学21世紀COEプログラム 第一回公開シンポジウム
Dec. 2003 - Raman sideband generation at near maximal coherence, Light Modulation based on Quantum Coherence
M. Katsuragawa; Y. Ono; K. Hakuta
Oral presentation, English, The 9th Japan-US Seminar on Quantum Electronics and Laser Spectroscopy, Quantum Correlation and Coherence
Sep. 2003 - 超高周波分子周波数変調器
桂川眞幸; 横山恵太郎; 小野瀬貴士; 白田耕藏
Oral presentation, Japanese, 日本物理学会2003秋季大会
Sep. 2003 - 振動／回転コヒーレンスの同時断熱励起と超広帯域ラマンサイドバンド光の発生II
杉山陽亮; 横山恵太郎; 小野瀬貴士; 茂木治; 桂川眞幸; 白田耕藏
Oral presentation, Japanese, 第64回応用物理学会学術講演会
Sep. 2003 - 二波長注入同期波長可変パルスチタンサファイアレーザー
小野瀬貴士; 横山恵太郎; 茂木治; 桂川眞幸
Oral presentation, Japanese, 第64回応用物理学会学術講演会
Aug. 2003 - 振動及び回転コヒーレンスの同時断熱励起に基づく超広帯域ラマンサイドバンド光の発生
小野夢樹; 杉山亮介; 横山恵太郎; 桂川眞幸; 白田耕藏
Oral presentation, Japanese, 第50回応用物理学関係連合講演会、28p-YQ-4、神奈川大学、2003年3月27－3月30日
Mar. 2003 - 振動回転分子変調器の実現
桂川眞幸; 小野夢樹; 白田耕藏
Oral presentation, Japanese, 日本物理学会第58回年次大会、31aYA-13、東北大学、2003年3月28－3月31日
Mar. 2003 - 量子コヒーレンスによる超高速大振幅光変調システムの開発
杉山陽亮; 小野夢樹; 桂川眞幸
Others, Japanese, 電気通信大学 サテライト･ベンチャー･ビジネス･ラボラトリー平成14年度 研究成果報告会、電気通信大学、2003年3月18日
Mar. 2003 - 固体水素EIT用OPOレーザーの開発
大島裕貴; 桜井武之; 梁佳旗; 桂川眞幸; 白田耕藏
Oral presentation, Japanese, 日本物理学会第58回年次大会、31aYA-12、東北大学、2003年3月28－3月31日
Mar. 2003 - 量子コヒーレンスによる超高速大振幅光変調システムの開発
杉山陽亮; 小野夢樹; 桂川眞幸
Oral presentation, Japanese, 電気通信大学 サテライト･ベンチャー･ビジネス･ラボラトリー平成14年度 研究成果報告会
Mar. 2003 - 固体水素EIT用OPOレーザーの開発
大島裕貴; 桜井武之; 梁佳旗; 桂川眞幸; 白田耕藏
Oral presentation, Japanese, 日本物理学会第58回年次大会、31aYA-12、東北大学、2003年3月28－3月31日
Mar. 2003 - 量子コヒーレンスによる超高速大振幅光変調システムの開発
杉山陽亮; 小野夢樹; 桂川眞幸
Others, Japanese, 電気通信大学 サテライト･ベンチャー･ビジネス･ラボラトリー平成14年度 研究成果報告会
Mar. 2003 - 100THz 分子振動子の生成と超短パルス光発生への応用
桂川眞幸; 小野夢樹; 白田耕藏
Oral presentation, Japanese, 日本物理学会2002年秋季大会、8p-XF-12、中部大学、2002年9月6－9月9日
Sep. 2002 - 最大コヒーレンスと超短パルス光発生への応用Ⅰ
桂川眞幸; 小野夢樹; 白田耕藏
Oral presentation, Japanese, 第63回応用物理学会学術講演会、27a-YA-11、新潟大学 五十嵐キャンパス、2002年9月24－9月27日
Sep. 2002 - 最大コヒーレンスと超短パルス光発生への応用Ⅱ
小野夢樹; 桂川眞幸; 白田耕藏
Oral presentation, Japanese, 第63回応用物理学会学術講演会、27a-YA-12、新潟大学 五十嵐キャンパス、2002年9月24－9月27日
Sep. 2002 - Raman sideband generation at near maximal coherence
M. Katsuragawa; Y. Ono; K. Hakuta
Oral presentation, English, ICAP Eighteenth International Conference on Atomic Physics
Aug. 2002 - 固体水素中での超低速光パルス伝搬
白田耕藏; 梁佳旗; Fam Le Kien; 桂川眞幸
Oral presentation, Japanese, 日本物理学会第57回年会、25a-WM-8、立命館大学 くさつキャンパス、2002年3月24－3月27日
Mar. 2002 - 高いラマンコヒーレンスを用いた多次ラマンサイドバンド光系列の同軸発生
小野夢樹; 桂川眞幸; 白田耕藏
Oral presentation, Japanese, 第49回応用物理学関係連合講演会、28p-ZE-2、東海大学 湘南校舎、2002年3月27－3月30日
Mar. 2002 - 単一周波数波長可変真空紫外パルスレーザー光の発生
富崎巧一郎; 桂川眞幸; 白田耕藏
Oral presentation, Japanese, 第49回応用物理学関係連合講演会、29a-ZG-6、東海大学 湘南校舎、2002年3月27－3月30日
Mar. 2002 - フーリエリミットナノ秒パルスレーザー；サブMHz線幅パルスの発生
秋野陽介; 桂川眞幸; 白田耕藏
Oral presentation, Japanese, 第49回応用物理学関係連合講演会、30a-ZG-4、東海大学 湘南校舎、2002年3月27－3月30日
Mar. 2002 - 固体水素の非線形光学
桂川真幸; 梁佳旗; 白田耕蔵
Public symposium, Japanese, 「量子効果等の物理現象」第5回定例シンポジウム, 科学技術振興事業団, 東京
Dec. 2001 - 固体水素薄膜による超短光パルス発生の制御
Fam Le Kien; 桂川真幸; 李健俊; 白田耕蔵
Public symposium, Japanese, 「量子効果等の物理現象」第5回定例シンポジウム, 科学技術振興事業団, 東京
Dec. 2001 - 周波数領域及び時間領域での固体水素Vibronの分光
黒田圭司; 桂川真幸; 鈴木勝; Fam Le Kien; 白田耕蔵
Public symposium, Japanese, 「量子効果等の物理現象」第5回定例シンポジウム, 科学技術振興事業団, 東京
Dec. 2001 - 高密度励起下におけるコヒーレントバイブロンの位相緩和
桂川 眞幸; Fam Le Kien; 鈴木 勝; 白田 耕藏
Oral presentation, Japanese, 日本物理学会2001年秋季大会，17a-RF-6,徳島文理大学 徳島校
Sep. 2001 - Slow light in a far-off-resonance Raman medium
J. Q. Liang; M. Katsuragawa; Fam Le Kien; K. Hakuta
Oral presentation, English, CLEO/Pacific Rim 2001, (Makuhari, Chiba, Japan)
Jul. 2001 - Slow light produced by stimulated Raman scattering in solid hydrogen
J. Q. Liang; M. Katsuragawa; Fam Le Kien; K. Hakuta
Oral presentation, English, Quantum Electronics and Laser Science Conference (QELS2001), (Baltimore, Maryland, U.S.A.)
May 2001 - Large coherence as a local oscillator with a high frequency of 120 THz
M. Katsuragawa; j. Q. Liang; K. Hakuta
Oral presentation, English, Quantum Electronics and Laser Science Conference (QELS2001), (Baltimore, Maryland, U.S.A.)
May 2001 - 単一周波数波長可変パルスチタンサファイアレーザー：超狭帯域線幅をもったフーリエトランスフォームリミットパルス
秋野陽介; 桂川眞幸; 梁 佳旗; 白田耕藏
Oral presentation, Japanese, 第48回応用物理学関係連合講演会，29a-V-2,明治大学（駿河台キャンパス）
Mar. 2001 - 125THz超高周波ローカルオシレーターとしてのラマンコヒーレンス
桂川眞幸; 梁 佳旗; 白田耕藏
Oral presentation, Japanese, 第48回応用物理学関係連合講演会，31p-YB-4,明治大学（駿河台キャンパス）
Mar. 2001 - 固体水素中に生成された大きなラマンコヒーレンス:125THzの超高周波ローカルオシレーターとして
桂川眞幸; 梁佳旗; Fam Le Kien; 白田耕藏
Oral presentation, Japanese, 日本物理学会第56回年次大会・春季大会，27p-YN-4,中央大学（多摩キャンパス）
Mar. 2001 - 透明媒質中の低群速度光伝播
梁 佳旗; Fam Le Kien; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会第56回年次大会・春季大会，27p-YN-5,中央大学（多摩キャンパス）
Mar. 2001 - 固体水素における第一振動励起状態のエネルギー緩和
J. Z. Li; 鈴木 勝; 桂川 眞幸; 白田 耕藏
Oral presentation, Japanese, 日本物理学会2001年秋季大会，17a-RF-7,徳島文理大学 徳島校
Mar. 2001 - 大きなコヒーレンスを用いた非線形光学
桂川眞幸; 梁 佳旗; 白田耕藏
Public symposium, Japanese, CRESTシンポジウム「量子効果等の物理現象」, CRESTシンポジウム「量子効果等の物理現象」第4回シンポジウム，津田ホール（千駄ヶ谷）
Dec. 2000 - 強結合による低群速度光伝播とパラメトリック過程
梁 佳旗; Fam Le Kien; 桂川眞幸; 白田耕藏
Public symposium, Japanese, CRESTシンポジウム「量子効果等の物理現象」, CRESTシンポジウム「量子効果等の物理現象」第4回シンポジウム，津田ホール（千駄ヶ谷）
Dec. 2000 - 固体水素に誘起された急峻な分散と低群速度光伝播
梁 佳旗; 桂川眞幸; Fam Le Kien; 白田耕藏
Oral presentation, Japanese, 日本物理学会第55回年次大会・秋季大会，22p-YK-5,新潟大学（五十嵐キャンパス）
Sep. 2000 - Nonlinear Optics with Incoherent Light
M. Katsuragawa; J. Q. Liang; K. Hakuta
Invited oral presentation, English, International Quantum Electronics Conference, IQEC 2000,（Nice, France），Invited., International conference
Sep. 2000 - Nonlinear Optics with Incoherent Light
M. Katsuragawa; J. Q. Liang; K. Hakuta
Invited oral presentation, English, CLEO/IQEC2000, Nice, France, International conference
May 2000 - 固体水素の高分解能ブリルアン分光
黒田圭司; Li Jianzhao; 小池直樹; 桂川眞幸; 鈴木 勝; 白田耕藏
Oral presentation, Japanese, 日本物理学会春季分科会，22a-F-4，関西大学(3月30日-4月2日,2000)
Mar. 2000 - インコヒーレント光によるパラメトリックビーティング
桂川眞幸; 梁佳旗; 鈴木 勝; 白田耕藏
Oral presentation, Japanese, 日本物理学会春季分科会，22a-F-5，関西大学(3月30日-4月2日,2000)
Mar. 2000 - 強結合パラメトリック過程と量子クリスタル発振器
梁 佳旗; 桂川眞幸; 白田耕藏
Public symposium, Japanese, CRESTシンポジウム「量子効果等の物理現象」, CRESTシンポジウム「量子効果等の物理現象」第3回シンポジウム，津田ホール（千駄ヶ谷）, 12月21日-22日,1999
Dec. 1999 - 線形/非線型ブリルアン分光による固体水素結晶の評価
黒田圭司; 是枝聡肇; Li Jian-Zhao; 桂川眞幸; 鈴木 勝; 斎官清四郎; 白田耕藏
Public symposium, Japanese, CRESTシンポジウム「量子効果等の物理現象」, CRESTシンポジウム「量子効果等の物理現象」第3回シンポジウム，津田ホール（千駄ヶ谷）, 12月21日-22日,1999
Dec. 1999 - 固体水素の誘導ラマン散乱-暗状態コヒーレンスによるサイドバンドの高効率発生
梁 佳旗; 桂川眞幸; Li Jianzhao; Fam Le Kien; 鈴木 勝; 白田耕藏
Oral presentation, Japanese, 日本物理学会分科会，秋の分科会，24p-A-8，岩手大学(9月23日-26日,1999)
Sep. 1999 - 第213回研究会報告、CLEO/QELS'99国際会議報告
桂川眞幸
Others, Japanese, 日本学術振興会 光エレクトロニクス第130委員会
Jul. 1999 - Nonlinear Optical Processes in Solid Hydrogen: New Perspectives on Quantum Optics, 3rd International Conference on Low Temperature Chemistry
K. Hakuta; M. Katsuragawa; M. Suzuki
Invited oral presentation, English, 3rd International Conference on Low Temperature Chemistry, Nagoya, Japan, International conference
Jul. 1999 - Nonlinear Optical Processes in Solid Hydrogen: New Perspectives in Quantum optics
K. Hakuta; M. Katsuragawa; M. Suzuki
Invited oral presentation, English, International Conference on Low Temperature Chemistry, （Nagoya, Japan），Invited., International conference
Jul. 1999 - 三準位系のDressed Stateと固体水素の誘導ラマン散乱
梁佳旗; 桂川眞幸; K. L. Fam; 鈴木 勝; 白田耕藏
Oral presentation, Japanese, 日本物理学会春季分科会，第54回年会，28a-ZD-2，広島大学（東広島キャンパス)
Mar. 1999 - 液体水素ドロプレットの誘導ラマン散乱Ⅱ
植竹 智; 桂川眞幸; 鈴木 勝; 白田耕藏
Oral presentation, Japanese, 日本物理学会,第54回年会,28a-ZE-10,広島大学(東広島キャンパス)
Mar. 1999 - 固体水素の強結合誘導ラマン散乱
桂川真幸; Jianzhao Li; 梁佳旗; 鈴木勝; 白田耕蔵
Public symposium, Japanese, 「量子効果等の物理現象」第2回シンポジウム, 「量子効果等の物理現象」第2回シンポジウム，JAホール東京大手町
Dec. 1998 - 固体水素の強結合誘導ラマン散乱
桂川真幸; Jianzhao Li; 梁佳旗; 鈴木勝; 白田耕蔵
Public symposium, Japanese, 「量子効果等の物理現象」第2回シンポジウム, 東京
Dec. 1998 - 固体水素・液体水素ドロプレットの非線形光学
植竹智; 桂川真幸; 鈴木勝; 白田耕蔵
Public symposium, Japanese, 「量子効果等の物理現象」第2回シンポジウム, 「量子効果等の物理現象」第2回シンポジウム,JAホール東京大手町, 東京
Dec. 1998 - 非線形光学／分光のための波長可変単一周波数パルスレーザーシステム
桂川真幸; Jianzhao Li; 梁佳旗; 白田耕蔵
Public symposium, Japanese, -, 「量子効果等の物理現象」第2回シンポジウム，JAホール東京大手町
Dec. 1998 - 固体水素・液体水素ドロプレットの非線形光学
植竹智; 桂川真幸; 鈴木勝; 白田耕蔵
Public symposium, Japanese, 「量子効果等の物理現象」第2回シンポジウム, 東京
Dec. 1998 - 最大コヒーレンス下での誘導ラマン散乱過程
桂川真幸; 梁佳旗; Jianzhao Li; 鈴木勝; 白田耕蔵
Oral presentation, Japanese, 日本物理学会,秋の分科会,27p-YQ-5,琉球大学,沖縄国際大学
Sep. 1998 - 単一周波数パルスTi:Al2O3レーザーの開発と非線形光学
岩崎康和; 梁佳旗; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, レーザー学会第249回研究会報告「レーザー計測」,大阪科学技術センター
Mar. 1998 - 波長可変単一縦モード紫外光の発生
岩永和也; R. S; D. Sihombing; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, レーザー学会第249回研究会報告「レーザー計測」,大阪科学技術センター
Mar. 1998 - 注入同期半導体レーザーシステムの開発と評価
山下友勇; 植竹智; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, レーザー学会第249回研究会報告「レーザー計測」,大阪科学技術センター
Mar. 1998 - 固体水素の強結合誘導ラマン散乱
桂川眞幸; 梁佳旗; 鈴木 勝; 白田耕藏
Oral presentation, Japanese, 日本物理学会年会（沖縄）
1998 - 液体水素ドロプレットの誘導ラマン散乱Ｉ
植竹 智; 桂川眞幸; 鈴木 勝; 白田耕藏
Oral presentation, Japanese, 日本物理学会年会（沖縄）
1998 - Strongly-coupled Stimulated Raman Scattering in Solid Hydrogen with Injection-seeding of Laser Diode
Jianzhao Li; 桂川真幸; 末岡久義; 芹澤宏; 鈴木勝; 白田耕蔵
Oral presentation, English, 日本物理学会,秋の分科会,7a-Q-10,神戸大学
Sep. 1997 - 暗状態コヒーレンスと固体水素の誘導ラマン散乱
白田耕蔵; 桂川真幸; 鈴木勝
Public symposium, Japanese, 「レーザー、原子発振器の周波数制御と応用」シンポジウム, 「レーザー,原子発振器の周波数制御と応用」シンポジウム,予稿集，電気通信大学, 東京
Apr. 1997 - 暗状態コヒーレンスと固体水素の誘導ラマン散乱
白田耕蔵; 桂川真幸; 鈴木勝
Public symposium, Japanese, 「レーザー、原子発振器の周波数制御と応用」シンポジウム, 東京
Apr. 1997 - レーザー物理における固体水素の可能性
桂川真幸; 鈴木勝; Jianzhao Li; 白田耕蔵
Oral presentation, Japanese, レーザー分光研究会,伊豆長岡温泉
Mar. 1997 - 大きな離調をもつ強結合三準位系の定式化
白田耕蔵; 桂川真幸; 鈴木勝
Oral presentation, Japanese, 日本物理学会,第52回年会,29p-YA-12,名城大学
Mar. 1997 - 固体水素を用いた強結合非線形光学:コヒーレンスの評価
桂川真幸; 鈴木勝; Jianzhao Li; 白田耕蔵
Oral presentation, Japanese, 日本物理学会,第52回年会,29p-YA-11,名城大学
Mar. 1997 - レーザー物理における固体水素の可能性
桂川真幸; 鈴木勝; Jianzhao Li; 白田耕蔵
Oral presentation, Japanese, レーザー分光研究会,伊豆長岡温泉, 量子エレクトロニクス研究会（レーザー分光）
Mar. 1997 - 固体水素を用いた強結合非線系光学
桂川真幸; 鈴木勝; Jianzhao Li; 白田耕蔵
Oral presentation, Japanese, レーザー学会第235回研究会「レーザー計測」,市ヶ谷
Jan. 1997 - Dark-state coherence and Stimulated Raman Scattering in solid hydrogen
K. Hakuta; M. Katsuragawa; M. Suzuki
Invited oral presentation, English, The Royal Society, Discussion Meeting, Highlights in Quantum Optics, The Royal Society, London, U. K., International conference
Jan. 1997 - Dark-state coherence and Stimulated Raman Scattering in solid hydrogen
K. Hakuta; M. Katsuragawa; M. Suzuki
Invited oral presentation, English, The Royal Society, Discussion Meeting, Highlights in Quantum Optics, The Royal Society, London, U. K., International conference
Jan. 1997 - レーザー場による光学応答の制御:固体系への拡張
白田耕蔵; 桂川真幸; 鈴木勝
Public symposium, Japanese, 文部省科学研究費重点領域研究「輻射場と物質系の相互量子制御」, 文部省科学研究費重点領域研究, 高松
Oct. 1996 - 誘導ラマン散乱と強結合三準位系の物理
白田耕蔵; 桂川真幸; 鈴木勝; R.S.D.Sihombing; Jianzhao Li
Oral presentation, Japanese, 日本物理学会,秋の分科会
Sep. 1996 - 固体水素の非線形光学II:誘導ラマン散乱
桂川真幸; 鈴木勝; R.S.D.Sihombing; Jianzhao Li; 白田耕蔵
Oral presentation, Japanese, 日本物理学会,秋の分科会
Sep. 1996 - 注入同期単一周波数Ti:Al2O3レーザーの開発
荻野篤; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, レーザー学会研究会（レーザー計測）,土岐
Jan. 1996 - Quantum Interference in Nonlinear Optical Processes Using Strong-Field Coupling in Atomic Hydrogen
M. Katsuragawa; G. Z. Zhang; R. S; D. Sihombing; Y. Ohta; K. Hakuta
Public symposium, English, Todai Symposium 1995 and 5th ISSP International Symposium, "Frontiers in Laser Physics and Spectroscopy"
Nov. 1995 - 水素原子の多光子イオン化過程に現れる量子干渉効果
R.S.D.Sihombing; 太田陽介; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会
Sep. 1995 - 半導体レーザー注入同期パルスTi:Al2O3レーザーの開発
荻野篤; 岩崎康和; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会
Sep. 1995 - 水素原子の多光子イオン化過程に現れる量子干渉効果
R.S.D.Sihombing; 太田陽介; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会
Sep. 1995 - Control of Optical Responses with Strong-Coupling and Induced Transparency
K.Hakuta; G. Z. Zhang; M. Katsuragawa; B. P. Stoicheff
Invited oral presentation, English, Jackson Hole 95 Conference on 'Quantum Coherence and Interference in Fundamental and Applied Physics', Alta, Wyoming, U. S. A., International conference
Aug. 1995 - Control of Optical Responses with Strong-Coupling and Induced Transparency
K.Hakuta; G. Z. Zhang; M. Katsuragawa; B. P. Stoicheff
Invited oral presentation, English, Jackson Hole 95 Conference on 'Quantum Coherence and Interference in Fundamental and Applied Physics', Alta, Wyoming, U. S. A., International conference
Aug. 1995 - 水素原子の非線形光学:超低温への拡張
白田耕蔵; 桂川真幸; 張光志
Oral presentation, Japanese, レーザー学会,レーザー学会研究会
Apr. 1995 - 水素原子の非線形光学:超低温への拡張
白田耕蔵; 桂川真幸; 張光志
Oral presentation, Japanese, レーザー学会,レーザー学会研究会
Apr. 1995 - 強結合Xe原子系の非線形光学
井辺大; R.S.D.Sihombing; 太田陽介; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会年会
Mar. 1995 - 半導体レーザー注入同期パルスTi:Al2O3レーザーの開発（II）
荻野篤; 山下友勇; 岩永和也; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会,第51回年会
Mar. 1995 - 水素原子の多光子イオン化過程に現れる量子干渉効果:線幅の起因
R.S.D.Sihombing; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会，第51回年会
Mar. 1995 - 固体水素の非線形光学I:誘導ラマン散乱
白田耕蔵; 百瀬孝昌; 鈴木勝; 桂川真幸; R.S.D.Sihombing
Oral presentation, Japanese, 日本物理学会,第51回年会
Mar. 1995 - 強結合Xe原子系の非線形光学
井辺大; R.S.D.Sihombing; 太田陽介; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会年会
Mar. 1995 - 半導体レーザー注入同期パルスTi:Al2O3レーザーの開発（II）
荻野篤; 山下友勇; 岩永和也; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会,第51回年会
Mar. 1995 - 水素原子の多光子イオン化過程に現れる量子干渉効果:線幅の起因
R.S.D.Sihombing; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会，第51回年会
Mar. 1995 - 固体水素の非線形光学I:誘導ラマン散乱
白田耕蔵; 百瀬孝昌; 鈴木勝; 桂川真幸; R.S.D.Sihombing
Oral presentation, Japanese, 日本物理学会,第51回年会
Mar. 1995 - 固体水素の非線形光学II:誘導ラマン散乱
桂川真幸; 鈴木勝; R.S.D.Sihombing; Jianzhao Li; 白田耕蔵
Oral presentation, Japanese, 日本物理学会,秋の分科会
Mar. 1995 - Observation of Population Inversion in Recombining Al Plasma by Time- and Space-Resolved X-ray Spectroscopy,
M. Katsuragawa; J. Itatani; S. Orimo; T. Ozaki; H. Kuroda; A.Sasaki
Others, English, Technical Report of ISSP
1995 - ime and Space Resolved Observation of Population Inversion in a He-like Al Plasma Pumped by Fundamental and Second harmonic of a Nd: Glass Laser
S. Orimo; M. Katsuragawa; T. Ozaki; H. Kuroda
Others, English, Technical Report of ISSP
1995 - Baイオンを用いた量子干渉効果の研究I
直井哲二; 井辺大; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 応用物理学会,応用物理学会学術講演会
Sep. 1994 - 非線形光学過程における衝突誘起遷移の効果
張光志; 吉田真吾; 桂川真幸; 白田耕蔵
Oral presentation, Japanese, 日本物理学会
Sep. 1994 - H+H2系における非線形光学過程(I)
白田耕蔵; B. S. Abbot; 桂川真幸; 張光志
Oral presentation, Japanese, 日本物理学会,日本物理学会年会
Sep. 1994 - H+H2系における非線形光学過程(II)
桂川真幸; 張光志; 堤和代; 白田耕蔵
Oral presentation, Japanese, 日本物理学会,日本物理学会年会
Sep. 1994 - Nonlinear Optics in Atomic Hydrogen Using Strong-Field Coupling and Induced Transparency
K. Hakuta; G. Z. Zhang; M. Katsuragawa; R. I. Thompson; B. P. Stoicheff
Invited oral presentation, English, The U.S.- Japan Seminar on Quantum Electronic Devices and States of Matter, Napa Valley, California, International conference
Aug. 1994 - H様及びHe様プラズマの時間空間分解X線スペクトル
桂川真幸; 板谷治郎; 織茂聡; 尾崎恒之; 青木尊之; 黒田寛人
Oral presentation, Japanese, 日本物理学会,日本物理学会第8回秋の分科会
Sep. 1992 - 軟X線レーザー、He-like Alプラズマの時間分解スペクトルII
桂川真幸; 尾崎恒之; 青木尊之; 藍谷典生; 織茂聡; 黒田寛人
Oral presentation, Japanese, 日本物理学会,日本物理学会第46回年会
Sep. 1991 - XUVレーザー、He-like Alプラズマの時間分解スペクトル
桂川真幸; 尾崎恒之; 黒田寛人
Oral presentation, Japanese, 日本物理学会,日本物理学会春の分科会
Mar. 1991 - 空間分解X線スペクトルによるHe様Al、Siの反転分布の観測
桂川真幸; 室尾和之; 田中佑一; 黒田寛人
Oral presentation, Japanese, 日本物理学会,日本物理学会第44回年会
Mar. 1989 - He-AlプラズマにおけるXUV増幅利得
室尾和之; 桂川真幸; 田中佑一; 黒田寛人
Oral presentation, Japanese, X線レーザーの基礎過程に関する研究会 (有馬)
Feb. 1989 - He-Alプラズマにおける反転分布の観測
桂川真幸; 室尾和之; 田中佑一; 黒田寛人
Oral presentation, Japanese, X線レーザーの基礎過程に関する研究会
Feb. 1989 - He-Alプラズマにおける反転分布の観測
桂川眞幸; 室尾和之; 田中佑一; 黒田寛人
Oral presentation, Japanese, Ｘ線レーザーの基礎過程に関する研究会
1989 - He-AlプラズマにおけるXUV増幅：利得測定
室尾和之; 桂川眞幸; 田中佑一; 黒田寛人
Oral presentation, Japanese, Ｘ線レーザーの基礎過程に関する研究会
1989 - ピコ秒ガラスレーザーによるXUVレーザー実験II: X線スペクトル
桂川真幸; 内藤研象; 室尾和之; 田中佑一; 黒田寛人
Oral presentation, Japanese, 日本物理学会,第43回年会
Mar. 1988 - Population Inversions between n=5, 4, 3 and 2 levels of He-like Al Plasma observed by Spatially Resolved X-ray Spectroscopy
H. Kuroda; M. Katsuragawa; K. Muroo; Y. Tanaka
Invited oral presentation, English, Washington, DC : Optical Society of America, International conference
1988
Courses
Research Themes
- 地球とジオスペースをつなぐ鉛直物質輸送観測の新手法
江尻 省; 桂川 眞幸; 中村 卓司; 津田 卓雄
日本学術振興会, 科学研究費助成事業 挑戦的研究(開拓), 国立極地研究所, 挑戦的研究(開拓), 地球と宇宙の境界領域（高度80-150 km）は、大気が中性大気から電離大気（プラズマ）に変化する地球大気の遷移領域である。しかし、中性大気とプラズマ共に観測手段が限られており、同時観測が困難であるため、化学変化を伴うこの領域の物質輸送は本質的に未解明である。本研究では、この遷移領域において同一空間の中性原子とイオンの密度高度分布を同時に観測可能な世界初の原子・イオン共鳴散乱ライダーを開発し、地球と宇宙をつなぐ物質の鉛直輸送過程を解明することを目的としている。初年度である令和3年度は、送信レーザー開発班とライダーシステム開発班の二班体制で並行して装置開発を行った。送信レーザー開発では、チタンサファイア（Ti:s）レーザーをベースにした二波長同時発振・注入同期固体レーザーを設計・製作して、まずカルシウムイオン（Ca＋）の共鳴散乱線（393.5 nm）での発振を確認した。共振器の調整により、発振の安定化を進めている。ライダーシステム開発としては、レーザーの発振波長の確認に用いている波長計の絶対精度を担保するために、カリウム原子を封入したセルを加熱してレーザー光を通過させたときに得られる蛍光スペクトルをモニターし、Doppler-freeと呼ばれる特定の波長で見られる飽和スペクトルを測定する絶対波長校正システムを構築した。また、受信分光系の設計を行い、製作を進めている。, 21K18315
09 Jul. 2021 - 31 Mar. 2025 - Establishment of high resolution laser spectroscopy in the vacuum ultraviolet region and its application to laser cooling of anti-hydrogen
桂川 眞幸
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S), The University of Electro-Communications, Grant-in-Aid for Scientific Research (S), 20H05642
31 Aug. 2020 - 31 Mar. 2025 - 革新レーザー技術で拓くエキゾチック物質の量子操作
桂川 眞幸
日本学術振興会, 科学研究費助成事業 新学術領域研究(研究領域提案型), 電気通信大学, 新学術領域研究(研究領域提案型), 光量子科学はレーザーの極限化技術とともに互いに表裏一体をなし発展してきた。ほぼ全ての領域が開拓されてきたように見える一方で、レーザーの発明から60年を経た現代でも、全く手つかずのまま残されたレーザー技術の領域がある。真空紫外域（< 200 nm）における単一周波数・波長可変レーザー技術はまさにその一つである。 研究代表者は、非線形光学過程に人為的な制御を組み込むことで、この真空紫外域におい、現実に高分解能レーザー分光をおこないうる性能をもつ単一周波数・波長可変レーザーを実現することが可能なことを示してきた。これまでに原理実証実験もおこない、予測に一致する波長変換が可能なことも実証されている。 この公募研究では、ミューオニウムのレーザー冷却に焦点を当て、この技術をその目的にカスタマイズした真空紫外域単一周波数波長可変レーザーを実際に実現すること、さらに、それを用いたレーザー分光実験をおこなうことを目指している。 公募研究の初年度に当たる2021年度は、パラ水素分子気体を非線形光学媒質とする高次誘導ラマン散乱光発生過程を典型例として原理実証された結果を、高次過程に拡張する研究を進め、実際に数十％の効率で特定次数の誘導ラマン散乱光にエネルギー集中できることを実験的に示した。 また、並行してこの技術を真空紫外域に拡張するための様々な準備を進めた。技術的に鍵になるのは、励起レーザーに用いる注入同期単一周波数波長可変 Ti:sレーザーの周波数純度やビーム品質を良質な状態（端的には単一縦・横モード）に保ったまま、如何に高出力化するかという点にあった。実際にその開発を進め、従来に比べて、4倍近い出力が可能なレーザーを実現する目途が立つところまで到達できた。, 21H00165
01 Apr. 2021 - 31 Mar. 2023 - Attosecond manipulation of electron tunneling at nanoscales
片山 郁文; 桂川 眞幸
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Yokohama National University, Grant-in-Aid for Scientific Research (B), 本研究では、連続波光源の光コムを合成することによって生成される超高繰り返し、位相制御アト秒パルスと走査型トンネル顕微鏡とを組み合わせ、アト秒時間領域の電子トンネル現象を誘起し制御することを目指し、研究を行ってきた。これまで、光電場を用いた電子トンネリング現象はテラヘルツ波や高強度のレーザーを用いて実証されてきているが、光領域での実証結果については議論のあるところである。これを可視光領域にスペクトルを持つ、位相制御アト秒レーザーで実現することにより、トンネル分光の超高速化を可能にすることを目指した。昨年度は、これまでに構築したアト秒STM装置を中心に光電場駆動のトンネル現象を明らかにする研究を推進した。特に、CWレーザーの合成波のみならず、パルスレーザーの合成波による電子トンネリング実験を試み、光電場によってもアト秒オーダーのトンネリングが誘起できることを実証することを目指した。このために、パルスレーザーと光第二高調波との合成波を照射し、誘起されるトンネル電流を観測する実験系を構築した。また、CWレーザー合成波の実験においては、熱の影響を取り除きつつ、光電場の影響を取り出すために、位相を高速で変調することによるトンネル電流の変化をロックインアンプを用いて検出する系を構築した。しかしながら、本研究により、位相制御によるトンネル電流の誘起効果を明確に観測することができなかった。特に熱によるトンネル電流の増加との切り分けが難しく、位相に依存した効果であることの実証が難しい状況であった。一方でシミュレーションを通して、トンネル電流がどの程度現れるかの計算を行い、ナノギャップの幅を小さくすれば、トンネル電流が観測可能となると考えられることが分かった。, 20H02653
01 Apr. 2020 - 31 Mar. 2023 - Manipulation of nonlinear frequency conversion processes and its application to development of a single frequency widely tunable laser
Katsuragawa Masayuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), The University of Electro-Communications, Grant-in-Aid for Scientific Research (A), We showed a conceptually novel idea that nonlinear optical process could be manipulated in a variety of ways by controlling the relative phases among the electromagnetic fields relevant to its nonlinear optical process. We established such basis theoretically and experimentally. We also opened a way to build a new laser technology, that is, single-frequency widely tunable laser in the vacuum ultraviolet region., 16H02213
01 Apr. 2016 - 31 Mar. 2020 - Frequency-tunable vacuum-ultraviolet laser with an optical frequency standard precision
KATSURAGAWA MASAYUKI
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), The University of Electro-Communications, Grant-in-Aid for Scientific Research (A), We aimed to realize a novel coherent light source, namely, a broadly-tunable vacuum ultraviolet (vuv) laser with an optical-frequency-standard precision. First, we developed the injection-locked continuous wave Ti:s laser which can emit a variety combinations of two frequencies. Next, to transfer an optical-frequency-standard precision to these two frequencies, we also developed the new optical technology which accurately divide an optical frequency into three. Furthermore, we have numerically shown that by employing such laser radiations, high-order stimulated Raman scattering process can be artificially controlled and a frequency conversion to a specific high-order Raman mode in the vuv region can be realized with near unity quantum conversion efficiency., 24244065
01 Apr. 2012 - 31 Mar. 2016 - Detection of neutrino pairs using macro coherent amplification mechanism
SASAO NOBORU; NAKANO Itsuo; YOSHIMURA Motohiko; FUKUMI Atsushi; WAKABAYASHI Tomonari; TANAKA Minoru; KATSURAGAWA Masayuki; NANJO Hajime; KAWAGUCHI Kentarou; TANG Jian; KUBOZONO Yoshihiro; TANIGAKI Katsumi; NAKAJIMA Kyo; YOSHIMURA Koji; YOSHIMI Akihiro; UETAKE Satoshi; KUMA Susumu; TANIGUCHI Takashi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Okayama University, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), "Macro-coherent amplification mechanism" is the crucial principle for success of the neutrino mass spectroscopy with atoms. The most important result of the present research was an experimental proof of the principle with a two photon process from the vibrationally excited state of para-hydrogen molecules. Actually, the initial coherent states were prepared by an adiabatic Raman process, and two photon emissions were observed. As a result, a gigantic enhancement factor of the photon yields greater than 15 orders of magnitude was confirmed compared to its natural emission rate; it was found consistent with the theoretical prediction. Thus a big step has been made forward towards the neutrino mass spectroscopy with atoms. In addition, detailed studies on super-radiance and phase relaxation etc. were conducted as basic studies using various atoms and molecules., 21104002
01 Apr. 2009 - 31 Mar. 2015 - 光ディバイスのための無機有機ハイブリッド高非線形光学媒質の研究
桂川 眞幸; ANTHONY JohnKiran; ANTHONY J.K; ANTHONY John Kiran
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, これまで自由空間中でおこなわれてきたラマンサイドバンド光発生を、中空コアフォトニッククリスタルファイバー媒質中でおこなうことによって、格段に高い効率(およそ三桁)で実現できることを明らかにした(論文準備中)。効率が格段に上がったことで、これまで、液体窒素温度下(77K)でおこなわれていたこの動作を室温でおこなっても、従来に比べてほとんど遜色無い結果を得ることができるようになった.これは、開発した光源を他の様々な非線形光学物性研究に利用していくという視点でも極めて重要な進展である。ファイバーはカゴメ格子状の断面をもち、従来のフォトニッククリスタルファイバーに比べて、一桁以上広い透過帯域(400mm～2μm)を持っている。帯域は2オクターブ以上に渡るが、全ての波長に対して単一モード伝播特性が満たされるという極めて優れた特徴を有している。これは、このファイバー中で効率よく広帯域にわたる非線形波長変換を実現できることを意味しており、それによって、実際に、上記の結果を得ることができた。その後、これらの成果をアト秒域に達しうる極限的な超短パルス光発生に向けて発展させることを目的に、理論的な検討を開始した。アト秒域に至る超短パルス光発生が可能なことを、膨大かつ系統的な数値計算を実施して明らかにした(論文準備中)。残念ながら、研究期間の制限でこれを実験的に実証する段階にまでは到達できなかったが、理論の骨組みを構築し、かつ、それらをもとに実施した詳細な数値計算実験は、実際にこれを実験で実証するための準備として、充分なものとなった。, 09F09230
2009 - 2011 - Generation of ultrahigh-repetition-rate ultrashort laser pulses in the continuous regime
KATSURAGAWA Masayuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), The University of Electro-Communications, Grant-in-Aid for Scientific Research (B), The aim of this research project is to extend the new technique of ultrahigh-rep.-rate ultashort-pulse generation to the continuous regime, the basis of which was established in the nanosecond pulsed regime. We have build up all the required elements for this purpose ;"Dual-freq.-oscillation injection-locked Ti : Sapphire cw laser","Intracavity Raman generation system", and"Theory of Raman sideband generation in the cw regime". Furthermore, we combined all of these elements established here and carried out the Raman sideband generation in the cw regime. We have clarified the excitation power and the confinement condition necessary for realizing a broad Raman generation in the cw regime based on the experiment., 21340114
2009 - 2011 - 分子光変調による超高繰り返し超短パルス光の発生
桂川 眞幸
科学技術振興機構, 戦略的な研究開発の推進 戦略的創造研究推進事業 さきがけ, 電気通信大学, Principal investigator, 本研究は、ほぼ完全にコヒーレントに振動/回転する高密度分子集団を形成し、それを高周波の光変調器として用いることで、実用レベルの高繰り返し超短パルス光列を生成することを目的とします。すでに10THz繰り返し、パルス幅10fs、ピーク強度>2MWの超短パルス光列の発生を確立しており、本研究ではこれをさらに発展させ、搬送波位相が固定された10THz繰り返しモノサイクル光を発生させることを目指します。
2005 - 2008 - 二波長発振注入同期ナノ秒パルスレーザーの高機能化
桂川 眞幸
産学が連携した研究開発成果の展開 研究成果展開事業 地域事業 地域イノベーション創出総合支援事業 シーズ発掘試験, 電気通信大学, Principal investigator, 注入同期の手法を用いて単一周波数化したナノ秒パルスレーザーは、狭いスペクトル幅(~MHz)と高い光強度(~MW)を併せ持つユニークなレーザーシステムである。産業用には、オゾン、CO2、エアロゾル等の環境関連計測や単一周波数波長可変テラヘルツ光発生などのキーテクノロジーとして利用されている。これらは多くの場合、異なる波長で発振する二台以上のシステムが組み合わされて用いられる。そのような用途においては、上記の利点の他方、それぞれのパルス間の時間・空間の不一致やその揺らぎが大きいことが測定精度上の深刻な障害であった。我々はこの問題を解決するために、二波長を同時に発振する注入同期レーザーシステムを考案し、“無調整”で異なる二波長のパルス間の完全な時間・空間のオーバーラップが実現されることを実証した。本試験研究の課題は、このシステムを実用化する上で鍵となる“二波長の広帯域連続周波数挿引化”を実施することにある。システム全体としては、ノートPC制御による いわゆる“ターンキー動作”が可能な完成度を目指す。
2006 - 2006 - Establishment of Molecular Light Modulation and its Application to Ultrashort Pulse Generation
KATSURAGAWA Masayuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), The University of Electro-Communications, Grant-in-Aid for Scientific Research (B), This project aimed realization of a novel ultrashort pulse laser by using a coherently-oscillating high-density molecular-ensemble as an ultrahigh-frequency light-modulator. We summarize the main points of the achievments for this three-years-project. 1.Realization of ultrahigh frequency light-modulator at both 125THz (vibration) and 10THz (rotation) (This is equivalent to the realization of near-maximal coherence state such that all the molecules coherently oscillate.) 2.Generation of ultrabroad Raman sidebands which extends from near vacuum ultraviolet to infrared with a frequency width of 〜70,000cm^<-1>(〜2,100 PHz) 3.Generation of a train of 10-fs ultrashort pulses at ultrahigh repetition-rate of 10-THz with high stability as an actual light source by controlling the spectral phases of the broad Raman sidebands. This result is quantitatively evaluated based on a well-established pulse measurement technique, second-harmonic-generation autocorrelation., 15340130
2003 - 2005 - Quantum Manipulation of Nuclear Spin of Ortho-H2 Molecule in Solid Hydrogen
HAKUTA Kohzo; SUZUKI Masaru; KATSURAGAWA Masayuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), The University of Electro-Communications, Grant-in-Aid for Scientific Research (B), We carried out the researches to establish a basis for manipulating nuclear-spin quantum-coherence of ortho-hydrogen molecule in solid hydrogen. Simultaneously, we developed a method to manipulate optical processes using optical nanofiber ; it was originally proposed to introduce a strong light into the solid hydrogen. Regarding the ortho-hydrogen project, we developed a highly-stable single-frequency cw laser at 2.4 μm wavelength using doubly-resonant OPO-technique. Ortho-hydrogen infrared transition (v=1-0, J=1-1) was measured systematically. We showed that the transition reveals an ultra-narrow spectral width of 1.6 MHz HWHM. This width is the narrowest width observed just using simple absorption spectroscopy, without using any nonlinear laser-spectroscopic method. Although density of ortho-hydrogen is very low 40 ppm, the peak absorption of 1-cm solid hydrogen crystal reaches to 60% ; it is due to the ultra-narrow spectral feature. We demonstrated also that the vibration-rotation spectrum splits into three components with splittings of about 10 MHz. The origin of the splitting may be understood due to breaking of magnetic degeneracy of J=1 state into three sublevels via crystal field. The observations have demonstrated that the ortho-hydrogen embedded in solid-parahydrogen is a unique system for realizing quantum coherence control in solid. The observed degeneracy breaking may open a new possibility to realize a new Raman three level scheme without magnetic field. Regarding the nanofiber, we established a method to produce nanofibers with diameter from 1μm to 400 nm with transmission of 80%. We showed theoretically a unique possibility to develop optical processes using nanofibers, very different from those in free space ; a key point is to confine both optical field and atoms/molecules into a submicron space around a nanofiber. We can manipulate single atom/molecule transition just using single photon. Moreover, spontaneous emission of atom/molecule near the nanofiber is strongly modified to emit photons into a guided mode of a nanofiber. We have observed experimentally the unique features of confinement in February of 2006. The observations imply that the nanofiber technique may open a new category of quantum optics., 15340131
2003 - 2005 - Generation of single-frequency tunable vacuum ultraviolet laser radiation in solid hydrogen
KATSURAGAWA Masayuki
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), The University of Electro-Communications, Grant-in-Aid for Scientific Research (C), The purpose of the present project is to realize useful coherent radiations in vacuum ultraviolet (vuv) region using solid hydrogen as a nonlinear optical material. We have tried to efficiently modulate single-frequency tunable laser radiations around 200 nm with extremely high Raman-coherence in solid hydrogen and generate single-frequency tunable laser radiations in vuv region. In the following, we summarize our principal results. 1, We have generated 201nm laser radiation by taking sum-frequency of 266nm- (forth harmonics of YAG laser) and 827nm- (Ti : sapphire laser) laser radiations with energy conversion efficiency of 〜10%. The pulse duration of the generated 201 nm laser radiation was 10 ns with the Fourier transform limited linewidth of 〜 30 MHz. 2, We have modulated the single-frequency tunable laser radiations at 201 nm by the Raman-coherence with the frequency of 125 THz that was adiabatically driven in solid hydrogen, leading vuv coherent radiation at 186 nm with quantum efficiency of 〜 8%. 3, We have demonstrated laser spectroscopy in vuv region for a transition in Schumann-Runge band (B ^3Σ_<-u> (v'=8, N'=20) ←X ^3Σ_<-g> (v"=0, N"=19), wavelength : 185.987nm) by using the coherent vuv radiation realized above. We have shown that the laser spectroscopy with spectral resolution of 〜 50 MHz is possible in vuv, leading the precise spectral profile and cross section of this transition., 13640398
2001 - 2002 - 超広帯域誘導ラマン散乱光高次系列の生成
桂川 眞幸
日本学術振興会, 科学研究費助成事業 奨励研究(A), 電気通信大学, 奨励研究(A), 本研究の目的は、固体水素をラマン媒質として、超広帯域にわたる高次ラマン散乱光系列を発生させることにある。通常の高次ラマン散乱光発生と異なる点は、全てのストークス、アンチストークス光が位相整合条件に束縛されずに励起光と全く同軸に発生することにある。以下、本研究期間のこの2年間に得られた成果をまとめる。 1、バルクの結晶で確立した固体水素高品質結晶作成法(液相加圧結晶作成法)の技術を、薄膜結晶(1mm以下)に応用した。常温から液体He温度に向かう材料の熱収縮を考慮して、高圧(30気圧)下でも光学窓がシールされるように試料セルを設計し、1mm以下、数μmの薄さまで任意の厚みの薄膜結晶を作成する技術を確立した。 2、ラマンコヒーレンス生成用の励起レーザーとして、738nm及び、832nm(二倍波:416nm)を中心波長として発振する注入同期単一縦モードパルスチタンサファイアレーザーを製作した。パルス幅20ns〜90nsのロングパルスに対して、ほぼフーリエトランスフォームリミットの線幅(20ns->〜15MHz、90ns->〜3MHz)をもったパルス出力光を得ることができた。出力エネルギーは、最大13mJ(励起エネルギー45mJ)であった。 3、固体水素のQ_1(0)遷移(ν=1←0,J=0←0)にほぼラマン共鳴する単一縦モードパルスレーザー対((1)YAGレーザー基本波:1.064μm, Ti:Al_2O_3レーザー:738nm;(2)YAGレーザー三倍波:355nm,Ti:Al_2O_3レーザー二倍波:416nm)を時間空間的にオーバーラップさせて、厚み250〜300μmに用意した薄膜固体水素結晶に入射した。(1)の励起条件に対して、アンチストークス光の1次、(565nm)2次(458nm)3次(385nm)及びストークス光の2次(1.9μm)が、(2)の励起条件に対して、アンチストークス光の1次、(309nm)2次(274nm)3次(246nm)及びストークス光の2次(503nm)3次(635nm)4次(862nm)が、位相整合条件に束縛されずに励起光と全く同軸に(ガウス分布した空間パターン)をもって放射されるのが観測された。200MW/cm^2の励起強度に対して現状で得られている最大の変換効率は、アンチストークスの1次、ストークスの1次ともに15%程度であった。 研究を通して、当初計画した実験システムを確立し、また、パラメトリックな高次のラマン系列の発生が、位相整合条件に束縛されずに励起光と全く同軸に放射されるという現象の基本を確認することができた。より高次の光を効率よく発生させるために、固体水素結晶の損傷しきい値をあげなければいけないということが課題として残った。, 11740242
1999 - 2000 - 固体水素高品質単結晶の製作とその評価
桂川 眞幸
日本学術振興会, 科学研究費助成事業 奨励研究(A), 電気通信大学, 奨励研究(A), 固体水素は水素分子を単位とする量子固体で、その際立った特徴は、固体にもかかわらず振動、回転の自由度が孤立した分子のように良く量子化された状態であることにある。孤立した分子としてのシャープな共鳴特性と固体の密度を併せ持つという特徴は、従来の非線形光学媒質としては全く取り扱われなかった対象で、我々はここに着目して、従来の限界を超えた様々な非線形光学過程を見出すことを目的に研究をおこなっている。 本研究の目的は、非線形光学過程の研究に十分な品質をもった固体水素単結晶の製作方法を確立することにある。結晶成長は、液相から試みた。液相からの結晶成長は、従来からも三重点付近では可能なことが知られていたが、この時の最大の問題は、結晶を冷却すると収縮による結晶の破壊がおこることにあった。結晶の破壊は、冷却時に結晶がセルの中で負圧の状態に置かれることによる。本研究では、OKでも結晶が負圧の状態にならないだけの高圧(〜30気圧)を結晶成長の初期条件として与えることでこの問題点を解決することを試みた。高圧(30気圧)をかけて液相より成長させることにより、液体He温度(4.2K)においても光学的に全く透明な結晶を得ることに成功した。 結晶のサイズは、直径8mm、厚み10mmである。より定量的な結晶の評価は、振動励起状態の位相緩和時間からおこなった。コヒーレントアンチストークスラマン分光法で評価した位相緩和時間は、これまでに報告された値よりも2桁長い値(〜5μs)を示し、結晶の品質が格段に改善されたことを確認することができた。さらに、この技術をもとに薄膜の結晶を作ることを試みた。30気圧の高圧に耐えうる数十ミクロンの隙間を持った光学セルを、常温から低温への熱収縮を考慮して如何に設計するかがポイントであった。60ミクロンの厚み光学的に透明な薄膜固体水素結晶を作ることに成功した。この技術が確立したところで、10ミクロン以上、任意の厚みの薄膜結晶をつくることが可能になった。, 09740329
1997 - 1998 - レーザー場による光学応答の制御 団体系への拡張
白田 耕蔵; 桂川 眞幸; 鈴木 勝
日本学術振興会, 科学研究費助成事業 重点領域研究, 電気通信大学, 重点領域研究, 平成8年度よりレーザー場による光学応答の制御の研究を高密度の凝縮系;個体系、へ拡張する試みを開始した。作業物質として固体水素を用いることにより、孤立原子・分子系の量子性と固体の高密度性を兼ね備えた状況が実現し、水素原子系で実証してきた量子干渉効果を用いる非線形光学の研究が従来の原理実証の限界を越えて発展できる見通しを得た。 強結合を達成するための要点は、2光子遷移のラビ周波数がその遷移の位相緩和速度を越えることであり、そのためには系の位相緩和速度が遅いことが本質的に重要である。本年度においては、固体水素の振動励起準位の位相緩和速度をポンプ・プローブ型のコヒーレント反ストークスラマン散乱法により測定した。2台のレーザーを用い、1台のレーザーで誘導ラマンを立ち上げ、コヒーレンスを発生させ、もう1方のレーザーとそのコヒーレンスのビ-ト光を反ストークス光として測定した。測定は、通常の位相整合条件を満たす反ストークス光(リング)及び強結合に基づく自動位相整合反ストークス光(スポット)について行った。リングとスポットによる緩和の振る舞いは大きく異なり、スポットによる信号は緩和速度(ラマンのスペクトル幅)にして3MHzFWHMであるのに対し、リングの信号は3MHzFWHMから70kHzFWHMへと大きな変化を示すものとなった。この解釈はいまだ確定していないが、弱結合から強結合へ相互作用が発展するに連れて、励起状態の分子数密度が上昇し、それにより励起状態間の相互作用により緩和速度も速くなることを反映しているものと思われる。今回の結果は固体水素の振動励起状態の緩和速度が固体としては異例に遅いことを示すものであり、固体水素の強結合非線形光学の可能性を示すものである。また、緩和速度が変化するという結果は強結合へのシステムの発展を定式化する上で極めて示唆的である。, 09210206
1997 - 1997 - 強結合下で多光子イオン化過程に現れる量子干渉効果の研究
桂川 眞幸
日本学術振興会, 科学研究費助成事業 奨励研究(A), 電気通信大学, 奨励研究(A), 本計画の目的は、多光子イオン化過程に現われる量子干渉効果の基礎的物理的側面を明らかにし、非線形光学過程における多光子イオン化過程をも含めた"制御"の可能性を探ることにあった。 対象とした媒質は理論的に厳密な取り扱いが可能である水素原子である。基底状態1sと二つの上準位2s、3pとからなる水素原子の3準位系に対し、上準位2s、3p間を強いレーザー場によって強結合し、基底状態からこの強結合上準位系に2光子共鳴するレーザーによる多光子イオン化過程を観測した。Dressed Stateの位置では、2光子励起過程によるイオン化と発生した和周波光の再吸収過程によるイオン化の間に生じる相殺的量子干渉効果により、媒質密度相互作用長(NL)積の増加とともに、多光子イオン化信号がほぼ完全に消失するのが観測された。二つの多光子イオン化過程の間の位相関係は、二光子励起光と発生した和周波光の位相関係で決まるので、それをコントロールすることで、完全な相殺的干渉から相乗的干渉まで任意に多光子イオン化信号をコントロールできることがわかった。一方、二つのDressed Stateのセンター、つまり3p準位の位置では、NL積の増加とともに発生した和周波光による極めてシャープなイオン化信号が観測された。この信号の幅は、最終的に準安定準位2s状態の自然幅まで狭くなりうることから、3p準位の自然幅を越えた高分解分光に利用できることが副産物的にわかった。, 08740337
1996 - 1996 - Baイオンを用いた反転分布の無いレーザーの研究
桂川 眞幸
日本学術振興会, 科学研究費助成事業 奨励研究(A), 電気通信大学, 奨励研究(A), 原子系の光応答に対する感受率を外場(電磁場)により制御した新しいタイプの非線形光学過程とレ-ジングの研究をおこなった。真空紫外、または極端紫外領域で、高効率にコヒーレント光を発生させることを最終的な目的としている。基本的なアイデアは、既に水素原子を用いて、理論的実験的に本研究室で実証済みで、本研究の主たる目的は、このアイデアを重い原子系へ拡張することにあった。対象とした物質は、一価のBaイオンと中性Xe原子で、それぞれ水素原子の137倍、及び131倍重い。これにより、水素原子を用いた非線形周波数混合過程で、効率の向上を妨げていたドップラー広がりを10分の1以下に抑えることができた。 Baを用いた研究では、スピン軌道相互作用によりJ=3/2と5/2に分かれた準安定状態の第一励起状態5D_<5/2>と第二励起状態6P_<3/2>を強力な単一縦モードレーザー光でカップルし、6P3/2-5D3/2遷移の吸収プロファイルを観測した。5D5/2と6P3/2を強力にカップルしたことにより、系に生じた量子的干渉の効果を、AC Starkした吸収プロファイルの非対称性から観測することができた。Xeを用いた研究では、828nmの強いレーザー場によって強結合した5p^5(^2P_<3/2>)6p-5p^5(^2P_<3/2>)6sの上準位へ向かって、5p^6-5p^5(^2P_<3/2>)6pを2光子励起し、5p^5(^2p_<3/2>)6sから5p^6へ遷移する差周波光を発生させ系の基礎特性の測定をおこなった。差周波光強度の密度-相互作用長積依存性と、同時に発生する多光子イオン信号から、系に量子的干渉が生じ、非線形感受率の共鳴的増大と発生光に対する透明化が同時に実現できていることが確認できた。これらの研究を通して、水素原子で展開された研究の成果を重い原子系へ、拡張可能なことが実証できた。 ここで、本研究の実行にあたって、新しく、585nm、614nm、828nmの単一縦モード広帯域波長可変レーザーの開発をおこない、これを実験に用いた。これらのレーザーは、系の基礎的特性の測定には、十分な成果を上げることができたが、今後この系を用いて実際に真空紫外光を高効率に発生させるには、さらに線幅の狭い半導体レーザー等のレーザーをベースにしたパルスレーザーシステムが必要であることが再認識された。, 06740340
1994 - 1994
Industrial Property Rights
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