Speaker
Yonghao Mi
(University of Ottawa)
Description
Laser-induced rotational wavepacket of hydrogen molecules has been experimentally observed in real time by using two sequential 25-fs laser pulses (pump-probe scheme) and a COLTRIMs spectrometer. By measuring the time-dependent yield of the above-threshold dissociation and the enhanced ionization of the molecule, we observed a few-femtosecond time delay in between the two dissociation pathways for both H2 and D2. The delay was understood and interpreted by a classical model considering enhanced ionization requires extra interaction with the laser field. We demonstrate the molecule rotational clock in hydrogen molecule is a straightforward method for timing ultrafast molecular dissociation dynamics.
Primary author
Yonghao Mi
(University of Ottawa)
Co-authors
Dr
Peng Peng
Dr
Camus Nicolas
Dr
Xufei Sun
Dr
Patrick Fross
Ms
Denhi Martinez
Mr
Zack Dube
Paul Corkum
(University of Ottawa)
Prof.
David Villeneuve
Andre Staudte
(National Research Council of Canada)
Prof.
Robert Moshammer
Prof.
Thomas Pfeifer
