Dr. A.-T. Le
Kansas State University, Department of Physics
Imaging Molecular Structure with Ultrafast Intense Laser Pulses
102 Cardwell Hall
November 11, 2013
When an atom or molecule is placed in an intense laser field, a valence electron can be tunneled out into the continuum, and as the laser field changes its direction, this electron has a chance to recollide with the parent ion. This recollision is at heart of various nonlinear processes such as high-order harmonic generation (HHG), high-energy above-threshold ionization (HATI), and non-sequential double ionization (NSDI). Those nonlinear processes contain information about the target and therefore can serve as tools for self-imaging of target structure. However, it remains a great challenge to disentangle the target structure information from the experimental measurements, especially for fast dynamically evolving systems. In this Colloquium I will give a brief overview of our recent progress towards achieving this goal. Main emphasis will be given to HHG. Finally, I will discuss our future directions.