Dr. Hiromichi Niikura

National Research Council of Canada,

Japan Science and Technology Agency

Attosecond and Angstrom Science

Thursday, February 21, 2008

4:00 p.m.

Cardwell 102

Time-resolved measurements have now reached the attosecond (10^-18 s) range.  A few-hundred attoseconds is the time scale of electron motion in atoms or molecules. There are at least two approaches to attosecond science. One can use attosecond XUV laser pulses, or attosecond re-colliding electron pulses. In this colloquium, I present how the re-colliding electron pulses can measure vibrational motion on the attosecond time scale, and how it can take 3D images of molecular orbitals with Angstrom resolution. In addition, I will show our recent results on a grating-based carrier-envelope phase stabilized laser system.