中国物理B ›› 2024, Vol. 33 ›› Issue (9): 93301-093301.doi: 10.1088/1674-1056/ad58b3

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Time-energy distribution of photoelectron from atomic states with different magnetic quantum numbers in elliptically polarized laser fields

Jingyang Xu(徐菁阳)1, Li Guo(郭丽)1,†, Xin Qi(齐昕)1, Ronghua Lu(陆荣华)2, Min Zhang(张敏)1,‡, Jingtao Zhang(张敬涛)1, and Jing Chen(陈京)3,4,§   

  1. 1 Department of Physics, Shanghai Normal University, Shanghai 200234, China;
    2 Key Laboratory for Quantum Optics and Center for Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    3 Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China;
    4 Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China
  • 收稿日期:2024-03-29 修回日期:2024-06-05 接受日期:2024-06-15 出版日期:2024-09-15 发布日期:2024-08-27
  • 通讯作者: Li Guo, Min Zhang, Jing Chen E-mail:guoli@shnu.edu.cn;zhangminzm@shnu.edu.cn;chenjing@ustc.edu.cn
  • 基金资助:
    We thank W. Quan for helpful discussion. Project supported by the National Key Research and Development Program of China (Grant No. 2019YFA0307700) and the National Natural Science Foundation of China (Grant Nos. 12274300 and 12074261)

Time-energy distribution of photoelectron from atomic states with different magnetic quantum numbers in elliptically polarized laser fields

Jingyang Xu(徐菁阳)1, Li Guo(郭丽)1,†, Xin Qi(齐昕)1, Ronghua Lu(陆荣华)2, Min Zhang(张敏)1,‡, Jingtao Zhang(张敬涛)1, and Jing Chen(陈京)3,4,§   

  1. 1 Department of Physics, Shanghai Normal University, Shanghai 200234, China;
    2 Key Laboratory for Quantum Optics and Center for Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    3 Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China;
    4 Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China
  • Received:2024-03-29 Revised:2024-06-05 Accepted:2024-06-15 Online:2024-09-15 Published:2024-08-27
  • Contact: Li Guo, Min Zhang, Jing Chen E-mail:guoli@shnu.edu.cn;zhangminzm@shnu.edu.cn;chenjing@ustc.edu.cn
  • Supported by:
    We thank W. Quan for helpful discussion. Project supported by the National Key Research and Development Program of China (Grant No. 2019YFA0307700) and the National Natural Science Foundation of China (Grant Nos. 12274300 and 12074261)

摘要: A Wigner-distribution-like (WDL) function based on the strong-field approximation (SFA) theory is used to investigate the ionization time of the photoelectron emitted from the initial states with different magnetic quantum number $m$ in elliptically polarized electric fields. The saddle-point method is adopted for comparisons. For different $m$ states, a discrepancy exists in the WDL distributions of the photoelectrons emitted in a direction close to the major axis of the laser field ellipse. Based on the saddle-point analysis, this discrepancy can be ascribed to the interference between electrons ionized from two tunneling instants. Our results show that the relationships between the tunneling instants and kinetic energy of photoelectrons are the same for different $m$ initial states when the Coulomb potential is not considered. Our work sheds some light on the ionization-time information of electrons from different magnetic quantum states.

关键词: strong-field ionization, Wigner-distribution-like, ionization instant

Abstract: A Wigner-distribution-like (WDL) function based on the strong-field approximation (SFA) theory is used to investigate the ionization time of the photoelectron emitted from the initial states with different magnetic quantum number $m$ in elliptically polarized electric fields. The saddle-point method is adopted for comparisons. For different $m$ states, a discrepancy exists in the WDL distributions of the photoelectrons emitted in a direction close to the major axis of the laser field ellipse. Based on the saddle-point analysis, this discrepancy can be ascribed to the interference between electrons ionized from two tunneling instants. Our results show that the relationships between the tunneling instants and kinetic energy of photoelectrons are the same for different $m$ initial states when the Coulomb potential is not considered. Our work sheds some light on the ionization-time information of electrons from different magnetic quantum states.

Key words: strong-field ionization, Wigner-distribution-like, ionization instant

中图分类号:  (Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))

  • 33.80.Rv
33.80.Wz (Other multiphoton processes) 42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)