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Original Papers (studies done in IMS / Tokyo Tech)

  1. Masato Hayashi; Yasuhiro Ohshima
    Quantum tunneling of a He atom above and below a benzene ring
    J. Phys. Chem. Lett. 2020, 11, 9745-9750
  2. Kenta Mizuse; Romu Fujimoto; Yasuhiro Ohshima
    Space-slice ion imaging: High slice resolution imaging in the polarization plane of arbitrarily polarized ionizing light
    Rev. Sci. Instrum. 2019, 90, 103107
  3. Kenta Mizuse; Romu Fujimoto; Yasuhiro Ohshima
    Acceleration and deceleration of unidirectional molecular rotation by a femtosecond laser pulse
    Chem. Lett. 2019, 48, 1371-1374
  4. Masato Hayashi; Yasuhiro Ohshima
    Sub-Doppler electronic spectrum of the benzene-D2 complex
    J. Chem. Phys., 2019, 150, 014301-1-10
  5. Kenta Mizuse; Nao Chizuwa; Dai Ikeda; Takashi Imajo; Yasuhiro Ohshima
    Visualizing rotational wave functions of electronically excited nitric oxide molecules by using ion imaging technique
    Phys. Chem. Chem. Phys., 2018, 20, 3303 - 3309
  6. Mizuse, K.; Fujimoto, R.; Mizutani,N.; Ohshima, Y.
    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
    Click here to see the video
    J. Vis. Exp. 2017, 120, e54917
  7. Mizuse, K.; Kitano, K.; Hasegawa, H.; Ohshima, Y.
    Quantum unidirectional rotation directly imaged with molecules
    Sci. Adv. 2015, 1, e1400185.
    Featured w/ Youtube
    Press release
  8. Akagi, H.; Kasajima, T.; Kumada, T.; Itakura, R.; Yokoyama, A.; Hasegawa, H.; Ohshima, Y.
    Isotope-selective ionization utilizing field-free alignment of isotopologues with a train of femtosecond laser pulses.
    Phys. Rev. A 2015, 91, 063416
  9. Kondo, M., Ohshima, Y., Tsubouchi, M.
    Ion effects on the structure of water studied by terahertz time-domain spectroscopy
    Chem. Phys. Lett. 2014, 591, 317-322.
  10. Hayashi, M. & Ohshima, Y.
    Sub-Doppler Electronic Spectra of Benzene-(H2)n Complexes
    J. Phys. Chem. A 2013, 117 (39), 9819-9830.
  11. Hayashi, M. & Ohshima, Y.
    Sub-Doppler electronic spectra of the benzene-(He)n complexes
    Chem. Phys. 2013, 419, 131-137.
  12. Miyake, S. & Ohshima, Y.
    Injection-seeded optical parametric amplifier for generating chirped nanosecond pulses.
    Opt. Express, 2013. 21(5): p. 5269-5274.
  13. Tsubouchi, M.; Nagai, M.; Ohshima, Y.
    Terahertz tomography of a photo-induced carrier based on pump-probe spectroscopy using counterpropagation geometry.
    Opt. Lett. 2012, 37 (17), 3528-3530.
  14. Akagi, H.; Kasajima, T.; Kumada, T.; Itakura, R.; Yokoyama, A.; Hasegawa, H.; Ohshima, Y.
    Isotope-selective ionization utilizing molecular alignment and non-resonant multiphoton ionization.
    Appl. Phys. B 2012, 109 (1), 75-80.
  15. Khodorkovsky, Y.; Kitano, K.; Hasegawa, H.; Ohshima, Y.; Averbukh, I. S., Controlling the sense of molecular rotation: Classical versus quantum analysis.
    Phys. Rev. A 2011, 83 (2), 023423.
  16. Baek, D.; Hasegawa, H.; Ohshima, Y.
    Unveiling the nonadiabatic rotational excitation process in a symmetric-top molecule induced by two intense laser pulses.
    J. Chem. Phys. 2011, 134 (22), 224302.
  17. Itakura, R.; Hasegawa, H.; Kurosaki, Y.; Yokoyama, A.; Ohshima, Y.
    Coherent Correlation between Nonadiabatic Rotational Excitation and Angle-Dependent Ionization of NO in Intense Laser Fields.
    J. Phys. Chem. A 2010, 114 (42), 11202-11209.
  18. Kitano, K.; Hasegawa, H.; Ohshima, Y.
    Ultrafast Angular Momentum Orientation by Linearly Polarized Laser Fields.
    Phys. Rev. Lett. 2009, 103 (22), 223002.
  19. Hasegawa, H.; Ohshima, Y.
    Coherent rotational dynamics of molecules induced by intense ultrafast laser fields.
    J. Phys, Conf. Ser. 2009, 185, 012014.
  20. Hasegawa, H.; Ohshima, Y.
    Nonadiabatic rotational excitation of benzene by nonresonant intense femtosecond laser fields.
    Chem. Phys. Lett. 2008, 454 (4-6), 148-152.
  21. Hasegawa, H.; Ohshima, Y.
    Quantum State Reconstruction of a Rotational Wave Packet Created by a Nonresonant Intense Femtosecond Laser Field.
    Phys. Rev. Lett. 2008, 101 (5), 053002.
  22. Hasegawa, H.; Ohshima, Y.
    Decoding the state distribution in a nonadiabatic rotational excitation by a nonresonant intense laser field.
    Phys. Rev. A 2006, 74 (6), 061401.


  1. Ohshima, Y.; Hasegawa, H.
    Coherent rotational excitation by intense nonresonant laser fields.
    Int. Rev. Phys. Chem. 2010, 29, 1-45.