High Power Laser Science and Engineering, 2016, 4 (4): 04000e40, Published Online: Jan. 19, 2017  

Channel-resolved subcycle interferences of electron wave packets emitted from H2 in two-color laser fields Download: 775次

Author Affiliations
1 Photonics Institute, Technische Universitat Wien, A-1040 Vienna, Austria
2 Institute of Theoretical Chemistry, University of Vienna, A-1090 Vienna, Austria
Abstract
We report on the observation of subcycle interferences of electron wave packets released during strong field ionization of H2 with cycle-shaped two-color laser fields. With a reaction microscope we measure three-dimensional momentum distributions of photoelectrons correlated with either HC2 or protons within different energy ranges generated by dissociation of HC2 . We refer to these different types of photoelectrons as channels. Our results show that the subcycle interference structures of electron wave packets are very sensitive to the cycle shape of the two-color laser field. We explain this behavior by the dependence of the ionization time within an optical cycle on the shape of the laser field cycle. The subcycle interference structures can be further used to obtain insight into the subcycle dynamics of molecules during strong field interaction.grant from the European Research Council (ERC project CyFi).

Xinhua Xie, Stefan Roither, Daniil Kartashov, Li Zhang, Andrius Baltuska, Markus Kitzler. Channel-resolved subcycle interferences of electron wave packets emitted from H2 in two-color laser fields[J]. High Power Laser Science and Engineering, 2016, 4(4): 04000e40.

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