Monday, July 14, 2014 11:00 AM to 12:00 PM
CREOL Room 102
CREOL Room 102
Jian Wu
State Key Laboratory of Precision Spectroscopy, East
China Normal University, Shanghai 200062, China
Abstract:
The near-infrared intense ultrashort laser pulse can be used
to probe and control the rich electronic and nuclear dynamics of molecules
through the multiphoton process. It is interesting not only for the fundamental
molecular physics, but also for the coherent control of the chemical reactions.
Experimentally, the electrons and ions ejected from a molecule are measured in
coincidence with the cold target recoil ion momentum spectroscopy (COLTRIMS).
By using the technique of the coincidence angular streaking, we show that the
dynamics of electron localization, especially the instantaneous field-direction
and internuclear-distance dependences, can be directly probed and controlled
from the diatomic to polyatomic hydrocarbon molecules, which is very recently extended
to two-dimension. We show that the vibrational motion of the nuclei can be
semi-classically traced and controlled by using two time-delayed ultrashort
laser pulses of detuned wavelengths. By controlling the rotational nuclear
wavepacket, we impulsively align molecules which can be used to manipulate the
spatiotemporal and frequency properties of a properly matched ultrashort laser
pulse, e.g., the supercontinuum generation, THz radiation, attraction and
repulse of intense filaments, photonic plasma grating, and so on. Our
experiments also reveal the electron-nuclear energy sharing in above-threshold
multiphoton ionization of molecules.
Biography:
Education
PhD in Optics, East China Normal University (Sept.
2002 – Jul. 2007)
Visiting graduate student, University of Rochester
(Nov. 2005 – Dec. 2006)
BS in Physics, East China Normal University (Sept.
1998 – Jul. 2002)
Employment
Professor in the State Key Lab. of Precision
Spectroscopy, East China Normal
University, Shanghai, China
Jul. 2010 to present
Humboldt research Fellow in the Institut für
Kernphysik, Goethe-Universität
Frankfurt, Frankfurt am Main, Germany
Sept. 2010 –Aug. 2012
Associate Professor in the State Key Lab. of
Precision Spectroscopy, and
Department of Physics, East China Normal University,
Shanghai, China
Jul. 2007 – Jul. 2010
Honours and Awards
New Century Excellent Talents in University:
Ministry of Education of China (2013)
Eastern Scholar: Shanghai Municipal Education
Commission (2013)
France Talent Innovation: French Consulate General
in Shanghai (2010)
Shanghai Rising-Star: Shanghai Science and
Technology Commission (2009)
Rao-Yutai fundamental optics award: Optical
Society of China (2007)
Research Interests
Dynamics of atoms/molecules in strong laser fields,
ultrafast nonlinear optics, ultrashort
pulse generation, and ultrafast time-resolved techniques.
Publications
Jian Wu has published about 80 research papers in
peer-reviewed scientific journals,
including 2 in Nature Communications and 11 in Physical
Review Letters
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