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

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【作者】 闫文敏； 陈基根； 王俊； 郭福明； 杨玉军；

【Author】 Wen-Min Yan;Ji-Gen Chen;Jun Wang;Fu-Ming Guo;Yu-Jun Yang;Institute of Atomic and Molecular Physics,Jilin University;Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy(Jilin University);Zhejiang Provincial Key Laboratory for Cutting Tools,Taizhou University;

【通讯作者】 杨玉军;

【机构】 Institute of Atomic and Molecular Physics,Jilin University； Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy(Jilin University)； Zhejiang Provincial Key Laboratory for Cutting Tools,Taizhou University；

【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 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.

【Abstract】 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；
【Key words】 high-order harmonic generation； above-threshold ionization；
【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)
  • 【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2020年01期
  • 【分类号】TN249;O562;O413
  • 【被引频次】1
  • 【下载频次】9
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