Yasuhiro Ohshima

Materials/Devices

Yasuhiro Ohshima

Professor

Atomic, Molecular, Optical Science

Biography

Yasuhiro Ohshima received his Dr. Science at University of Tokyo in 1989. He was a research associate in the Graduate School of Arts and Sciences, University of Tokyo (1988–1996), an associate professor in the Graduate School of Science, Kyoto University (1996–2004), and a professor in the Department of Photo-Molecular Science and Laser Research Center for Molecular Science, Institute for Molecular Science (2004–2014). He is now a professor in the Department of Chemistry, School of Science, Tokyo Institute of Technology.

Expectations for WRHI

We are expecting that under the WRHI program our original approaches developed in Tokyo Tech will be expanded into world-wide collaborative researches.

Research Projects

  • Visualization and control of quantum states of molecular motion

    This research project is aiming to capture the lively figures of molecules moving in a dynamic manner and to have a perfect command over the molecular motions. Here lasers with ultimate resolution in time and energy domains are employed complementally and cooperatively for this purpose.

    Related: Dr. Kenta Mizuse, Dr. Ilya Averbukh

    Molecular motionFemto-chemistryUltrafast lasersCoherent controlQuantum wave packets

  • New avenue in researches on dynamical molecular structure by wave-packet imaging spectroscopy

    This research project is to develop an innovative approach in molecular spectroscopy, termed wave-packet imaging spectroscopy, with high detection sensitivity, wide frequency coverage from MW to THz, and high frequency resolution. By utilizing this new method, the energy-level structure of molecular systems that exhibit large structural changes will be definitely determined to give deepen insight into structure dynamics pertinent to large-amplitude molecular motion leading to isomerization.

    Related: Dr. Kenta Mizuse

    Molecular spectroscopyRotational coherenceIon imagingMolecular clusters

2014-

Professor, Tokyo Institute of Technology
2004-2014

Professor, Institute for Molecular Science
1996-2004

Associate Professor, Kyoto University
1988-1995

Research Associate, The University of Tokyo
2019

K. Mizuse, R. Fujimoto, and Y. Ohshima, “Space-slice ion imaging: High slice resolution imaging in the polarization plane of arbitrarily polarized ionizing light,” Rev. Sci. Instrum. 90, 103107-1–12 (2019).
2018

K. Mizuse, N. Chizuwa, D. Ikeda, T. Imajo, and Y. Ohshima, “Visualizing rotational wave functions of electronically excited nitric oxide molecules by using ion imaging technique,” Phys. Chem. Chem. Phys. 20, 3303–9 (2018).
2015

K. Mizuse, K. Kitano, H. Hasegawa, and Y. Ohshima, “Quantum unidirectional rotation directly imaged with molecules,” Sci. Adv. 1, e1400185-1–8 (2015).
2013

S. Miyake and Y. Ohshima, “Injection-seeded optical parametric amplifier for generating chirped nanosecond pulses,” Opt. Express 21, 5269–5274 (2013).
2013

M. Hayashi and Y. Ohshima, “Sub-Doppler electronic spectra of the benzene–(H2)n complexes,” J. Phys. Chem. A 117, 9819–9830 (2013).
2010

Y. Ohshima and H. Hasegawa, “Coherent rotational excitation by intense nonresonant laser fields,” Int. Rev. Phys. Chem. 29, 619–663 (2010).
2009

K. Kitano, H. Hasegawa, and Y. Ohshima, “Ultrafast angular-momentum orientation by linearly polarized laser fields,” Phys. Rev. Lett. 103, 223003-1–4 (2009).
2008

H. Hasegawa and Y. Ohshima, “Quantum state reconstruction of a rotational wave packet created by a nonresonant intense femtosecond laser field,” Phys. Rev. Lett. 101, 053002-1–4 (2008).
2005

Y. Ohshima, K. Sato, Y. Sumiyoshi, and Y. Endo, “Rotational spectrum and hydrogen bonding of the H2O–HO radical complex,” J. Am. Chem. Soc. 127, 1108–1109 (2005).
2003

A. Mizoguchi, Y. Ohshima, and Y. Endo, “Microscopic hydration of the sodium chloride ion pair,” J. Am. Chem. Soc. 125, 1716–1717 (2003).