Quantum interference of a time-dependent wave packet of atom irradiated by an ultra-short laser pulse  

作　　者：Wen-Min Yan Ji-Gen Chen Jun Wang Fu-Ming Guo Yu-Jun Yang 闫文敏;陈基根;王俊;郭福明;杨玉军(Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China;Jilin Provincial Key Laboratory of Applied Atomic and Molecular SpectroscopyJilin University,Changchun 130012,China;Zhejiang Provincial Key Laboratory for Cutting Tools,Taizhou University,Taizhou 318000,China)

机构地区：[1]Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China [2]Jilin Provincial Key Laboratory of Applied Atomic and Molecular SpectroscopyJilin University,Changchun 130012,China [3]Zhejiang Provincial Key Laboratory for Cutting Tools,Taizhou University,Taizhou 318000,China

出　　处：《Chinese Physics B》2020年第1期223-228,共6页中国物理B（英文版）

基　　金：Project partially supported by the National Key Research and Development Program of China(Grant Nos.2019YFA0307700 and 2017YFA0403300);the National Natural Science Foundation of China(Grant Nos.11627807,11534004,11975012,and 11774129);the Jilin Provincial Research Foundation for Basic Research,China(Grant No.20170101153JC);the Science and Technology Project of the Jilin Provincial Education Department,China(Grant No.JJKH20190183KJ)

摘　　要：The wave packet evolution of an atom irradiated by an intense laser pulse is systematically investigated by using the numerical solution of the time-dependent Schr?dinger equation.There are two types of spatial interference structures in the time-dependent evolution of the atomic wave packet.With the increasing of the evolution time,the interference fringe spacing for typeⅠ(typeⅡ)becomes larger(smaller).As the wavelength of the incident laser increases,the interference of the wave packet is changed from typeⅡto typeⅠ,and the shift of interference type can be attributed to the contribution of excited states by using the energy analysis of the time-dependent wave function.The wave packet evolution of an atom irradiated by an intense laser pulse is systematically investigated by using the numerical solution of the time-dependent Schr ?dinger equation. There are two types of spatial interference structures in the time-dependent evolution of the atomic wave packet. With the increasing of the evolution time, the interference fringe spacing for type Ⅰ(type Ⅱ) becomes larger(smaller). As the wavelength of the incident laser increases, the interference of the wave packet is changed from type Ⅱ to type Ⅰ, and the shift of interference type can be attributed to the contribution of excited states by using the energy analysis of the time-dependent wave function.

关 键 词：high-order harmonic generation above-threshold ionization 

分 类 号：TN249[电子电信—物理电子学] O562[理学—原子与分子物理] O413[理学—物理]