中国物理B ›› 2020, Vol. 29 ›› Issue (1): 13202-013202.doi: 10.1088/1674-1056/ab5a3c

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

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

Wen-Min Yan(闫文敏), Ji-Gen Chen(陈基根), Jun Wang(王俊), Fu-Ming Guo(郭福明), Yu-Jun Yang(杨玉军)   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy(Jilin University), Changchun 130012, China;
    3 Zhejiang Provincial Key Laboratory for Cutting Tools, Taizhou University, Taizhou 318000, China
  • 收稿日期:2019-09-16 修回日期:2019-11-05 出版日期:2020-01-05 发布日期:2020-01-05
  • 通讯作者: Yu-Jun Yang E-mail:yangyj@jlu.edu.cn
  • 基金资助:
    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), and the Science and Technology Project of the Jilin Provincial Education Department, China (Grant No. JJKH20190183KJ).

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

Wen-Min Yan(闫文敏)1,2, Ji-Gen Chen(陈基根)3, Jun Wang(王俊)1,2, Fu-Ming Guo(郭福明)1,2, Yu-Jun Yang(杨玉军)1,2   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy(Jilin University), Changchun 130012, China;
    3 Zhejiang Provincial Key Laboratory for Cutting Tools, Taizhou University, Taizhou 318000, China
  • Received:2019-09-16 Revised:2019-11-05 Online:2020-01-05 Published:2020-01-05
  • Contact: Yu-Jun Yang E-mail:yangyj@jlu.edu.cn
  • Supported by:
    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), and 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 Schrödinger 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

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 Schrödinger 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.

Key words: high-order harmonic generation, above-threshold ionization

中图分类号:  (Multiphoton ionization and excitation to highly excited states)

  • 32.80.Rm
42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)