Hiroka HASEGAWA

Department of Engineering ScienceAssistant Professor
Cluster III (Fundamental Science and Engineering)Assistant Professor
Researcher Information

Degree

  • Doctor of Science, Nagoya University

Field Of Study

  • Natural sciences, Semiconductors, optical and atomic physics

Educational Background

  • Apr. 2020 - Mar. 2023
    Nagoya University, Graduate School of Science, Japan
  • Apr. 2018 - Mar. 2020
    Nagoya University, Graduate School of Science, 博士前期課程, Japan
  • Apr. 2014 - Mar. 2018
    Nagoya University, School of Science, Department of Chemistry, Japan
Research Activity Information

Paper

  • Decoding strong-field ionization of H2 via photoelectron momentum torus
    Daimu Ikeya; Hikaru Fujise; Minami Takahashi; Kyoichiro Yasui; Akitaka Matsuda; Mizuho Fushitani; Hirokazu Matsui; Hiroka Hasegawa; Oleg I. Tolstikhin; Toru Morishita; Akiyoshi Hishikawa
    Physical Review Research, 12 Sep. 2025, Peer-reviwed
    Scientific journal
    DOI URL
  • Dissociative ionization and Coulomb explosion of CH4 in two-color asymmetric intense laser fields
    H. Hasegawa; A. Matsuda; T. Morishita; L. B. Madsen; F. Jensen; O. I. Tolstikhin; A. Hishikawa
    Lead, Physical Chemistry Chemical Physics, Royal Society of Chemistry (RSC), 25, 37, 25408-25419, Sep. 2023, Peer-reviwed, Three-dimensional ion momentum imaging reveals that methane in two-color asymmetric intense laser fields has different waveform dependence for atomic and molecular hydrogen ion ejection.
    Scientific journal
    URL
    DOI URL
  • Helicity-dependent dissociative tunneling ionization of CF4 in multicycle circularly polarized intense laser fields
    H. Fujise; M. Uemura; H. Hasegawa; D. Ikeya; A. Matsuda; T. Morishita; L. B. Madsen; F. Jensen; O. I. Tolstikhin; A. Hishikawa
    Physical Chemistry Chemical Physics, Royal Society of Chemistry ({RSC}), 24, 15, 8962-8969, Apr. 2022, Peer-reviwed
    Scientific journal
    DOI URL
  • Asymmetric Dissociative Tunneling Ionization of Tetrafluoromethane in omega-2 omega Intense Laser Fields
    Hiroka Hasegawa; Tiffany Walmsley; Akitaka Matsuda; Toru Morishita; Lars Bojer Madsen; Frank Jensen; Oleg I. Tolstikhin; Akiyoshi Hishikawa
    Lead, FRONTIERS IN CHEMISTRY, 10, Apr. 2022, Peer-reviwed
    Scientific journal, English
    DOI URL
  • Time-resolved shot-by-shot photoelectron spectroscopy of autoionizing Xe+ states by EUV–free-electron-laser and near-IR laser pulses
    Mizuho Fushitani; Yoshitaka Kawabe; Hikaru Fujise; Makoto Yamada; Hiroka Hasegawa; Shigeki Owada; Tadashi Togashi; Kyo Nakajima; Makina Yabashi; Akitaka Matsuda; Yasumasa Hikosaka; Akiyoshi Hishikawa
    Physical Review A, American Physical Society ({APS}), 104, 2, 06 Aug. 2021, Peer-reviwed
    Scientific journal
    DOI URL
  • Angle dependence of dissociative tunneling ionization of NO in asymmetric two-color intense laser fields
    Tomoyuki Endo; Hikaru Fujise; Hiroka Hasegawa; Akitaka Matsuda; Mizuho Fushitani; Oleg Tolstikhin; Toru Morishita; Akiyoshi Hishikawa
    PHYSICAL REVIEW A, 100, 5, Nov. 2019, Peer-reviwed
    Scientific journal, English
    DOI URL

MISC

  • Selective-bond breaking of CF4 in phase-locked ω-2ω intense laser fields
    Hiroka Hasegawa; Tiffany Walmsley; Akitaka Matsuda; Toru Morishita; Lars Bojer Madsen; Frank Jensen; Oleg I. Tolstikhin; Akiyoshi Hishikawa
    Lead, To extend application of ω-2ω intense field reaction control to highly symmetric molecules, CF4 was studied by three-dimensional momentum imaging. The C-F bond directed along larger side of the laser fields tends to be broken., Optica Publishing Group, Jul. 2022, The International Conference on Ultrafast Phenomena (UP) 2022, Peer-reviwed
    URL
    DOI URL

Books and other publications

  • Bond-Breaking Dynamics of Td Symmetric Molecules in Asymmetric Intense Laser Fields
    Hiroka Hasegawa; Akitaka Matsuda; Toru Morishita; Akiyoshi Hishikawa
    Japanese, Vol. 79, No. 8, p437-440, The Physical Society of Japan, Aug. 2024, Peer-reviwed

Lectures, oral presentations, etc.

  • Calculation of ion energy spectra from CH4 Coulomb explosion in two-color intense laser fields
    Hiroka HASEGAWA; Toru MORISHITA
    日本物理学会 春季大会
    23 Mar. 2026
  • Ultrafast dissociation dynamics of polyatomic molecular ions in intense laser pulses
    Hiroka HASEGAWA
    UEC-SAARC Symposium on Emerging Technologies, Invited
    04 Dec. 2025
  • Recollision induced Coulomb explosion of CH4 in Intense laser fields
    H. Hasegawa; T. Morishita
    日本物理学会 第80回年次大会
    18 Sep. 2025
    16 Sep. 2025- 19 Sep. 2025
  • 直線偏光高強度レーザー場中 CH4クーロン爆発過程におけるイオン化後のダイナミクス
    長谷川 景郁; 森下 亨
    原⼦衝突学会 第 50 回年会
    19 Aug. 2025
    18 Aug. 2025- 20 Aug. 2025
  • Theoretical study of CH4 2+ dissociation processes in intense laser fields
    Hiroka Hasegawa; Toru Morishita
    34th International Conference on Photonic, Electronic and Atomic Collisions, Peer-reviewed
    04 Aug. 2025
    29 Jul. 2025- 05 Aug. 2025
  • Calculation of dissociative ionization of molecules in intense laser fields
    Hiroka Hasegawa
    Invited oral presentation, English, 29th International Workshop on Theory for Attsecond Quantum Dynamics, Invited
    04 Feb. 2025
    03 Feb. 2025- 05 Feb. 2025
  • Orientation dependent tunneling ionization and dissociation of methane in asymmetric two-color intense laser fields
    Hiroka Hasegawa
    Invited oral presentation, English, 15th Asian International Seminar on Atomic and Molecular Physics (AISAMP15), Invited
    22 Aug. 2024
    19 Aug. 2024- 23 Aug. 2024
  • 位相制御ω-2ω強レーザー場におけるCH4の解離性イオン化過程とクーロン爆発過程
    長谷川景郁; 松田晃孝; 森下亨; Lars Bojer Madsen; Frank Jensen; Oleg I. Tolstikhin; 菱川明栄
    Oral presentation, 第78回 日本物理学会 年次大会
    17 Sep. 2023