Angular momentum distribution in strong-field frustrated tunneling ionization

作     者：梁锦台 张若舟 马晓萌 周月明 陆培祥 Jintai Liang;Ruozhou Zhang;Xiaomeng Ma;Yueming Zhou;and Peixiang Lu

作者机构：School of Physics Huazhong University of Science and Technology Laboratory of Optical Information Technology Wuhan Institute of Technology 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2018年第16卷第4期

页      面：6-10页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.11622431 and 61405064) 

主　　题：020.2649 Strong field laser physics 020.4180 Multiphoton processes 320.7110 Ultrafast nonlinear optics 

摘      要：Using the classical-trajectory Monte Carlo model, we have theoretically studied the angular momentum distribution of frustrated tunneling ionization（FTI） of atoms in strong laser fields. Our results show that the angular momentum distribution of the FTI events exhibits a double-hump structure. With this classical model, we back traced the tunneling coordinates, i.e., the tunneling time and initial transverse momentum at tunneling ionization. It is shown that for the events tunneling ionized at the rising edge of the electric field,the final angular momentum exhibits a strong dependence on the initial transverse momentum at tunneling.While for the events ionized at the falling edge, there is a relatively harder recollision between the returning electron and the parent ion, leading to the angular momentum losing the correlation with the initial transverse momentum. Our study suggests that the angular momentum of the FTI events could be manipulated by controlling the initial coordinates of the tunneling ionization.