Taking snapshots of a moving electron wave packet in molecules using photoelectron holography in strong-field tunneling ionization  

作　　者：Mingrui He Yang Fan Yueming Zhou Peixiang Lu 何明睿;樊洋;周月明;陆培祥(Department of Basic Courses,Naval University of Engineering,Wuhan 430033,China;School of Physics and Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]Department of Basic Courses,Naval University of Engineering,Wuhan 430033,China [2]School of Physics and Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China

出　　处：《Chinese Physics B》2021年第12期348-353,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11874163,11604108,and 11604388);the Program for HUST Academic Frontier Youth Team;the Fundamental Research Funds for the Central Universities,China(HUST No.2017KFXKJC002)。

摘　　要：Coherent superposition of electronic states induces attosecond electron motion in molecules.We theoretically investigate the strong-field ionization of this superposition state by numerically solving the time-dependent Schrodinger equation.In the obtained photoelectron momentum distribution,an intriguing bifurcation structure appears in the strong-field holographic interference pattern.We demonstrate that this bifurcation structure directly provides complete information about the status of the transient wave function of the superposition state:the horizontal location of the bifurcation in the momentum distribution reveals the relative phase of the involved components of the superposition state and the vertical position indicates the relative coefficient.Thus,this bifurcation structure takes a snapshot of the transient electron wave packet of the superposition state and provides an intuitive way to monitor electron motion in molecules.

关 键 词：strong-field ionization photoelectron holography charge migration 

分 类 号：O561.4[理学—原子与分子物理]