Channel-resolved subcycle interferences of electron wave packets emitted from H_(2) in two-color laser fields

作     者：Xinhua Xie Stefan Roither Daniil Kartashov Li Zhang Andrius Baltuska Markus Kitzler 

作者机构：Photonics InstituteTechnische Universitat Wien Institute of Theoretical ChemistryUniversity of Vienna 

出 版 物：《High Power Laser Science and Engineering》 (高功率激光科学与工程（英文版）)

年 卷 期：2016年第4卷第4期

页      面：1-7页

核心收录：

学科分类：0808[工学-电气工程] 080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 070203[理学-原子与分子物理] 0807[工学-动力工程及工程热物理] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0827[工学-核科学与技术] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：financed by the Austrian Science Fund(FWF)under grants P25615-N27,P28475-N27,P21463N22,P27491-N27 and SFB-F49 NEXTlite by a starting grant from the European Research Council(ERC project CyFi) 

主　　题：molecular dynamics strong field ionization wave packet interference 

摘      要：We report on the observation of subcycle interferences of electron wave packets released during strong field ionization of H_2 with cycle-shaped two-color laser fields. With a reaction microscope we measure three-dimensional momentum distributions of photoelectrons correlated with either H_2^+ or protons within different energy ranges generated by dissociation of H_2^+. 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.