Interference Effect of Direct Photodetachment for H− Ions in a Short Laser Pulse  

作　　者：CHEN Jian-Hong ZHAO Song-Feng LI Xiao-Yong ZHOU Xiao-Xin 陈建宏;赵松峰;李小勇;周效信(College of Physics and Electronic Engineering,and Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province,Northwest Normal University,Lanzhou 730070;Department of Physics,Lanzhou City University,Lanzhou 730070)

机构地区：[1]College of Physics and Electronic Engineering,and Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province,Northwest Normal University,Lanzhou 730070 [2]Department of Physics,Lanzhou City University,Lanzhou 730070

出　　处：《Chinese Physics Letters》2012年第9期49-52,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11044007,11164025 and 11064013;the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant Nos 20096203110001 and 20116203120001;the Foundation of Northwest Normal University under Grant No NWNU-KJCXGC-03-62.

摘　　要：The electron detachment of negative hydrogen ions exposed to a few-cycle linearly polarized laser pulse is investigated in the context of the strong field approximation evaluated by the saddle-point method.The results show that the angular distributions of the laser-induced photoelectron obtained by the saddle-point method are in good agreement with both the experimental results and the numerical-integration results.More importantly,we show that the unusual maximum in the angular distributions of photoelectrons for negative hydrogen ions can be explained by the quantum interference effect based on the saddle-point method.

关 键 词：PHOTOELECTRON SADDLE Pulse 

分 类 号：TN2[电子电信—物理电子学]