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

作　　者：Jingyang Xu Li Guo Xin Qi Ronghua Lu Min Zhang Jingtao Zhang Jing Chen 徐菁阳;郭丽;齐昕;陆荣华;张敏;张敬涛;陈京(Department of Physics,Shanghai Normal University,Shanghai 200234,China;Key Laboratory for Quantum Optics and Center for Cold Atom Physics,Shanghai Institute ofOptics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Hefei National Research Center for Physical Sciences at the Microscale and School of PhysicalSciences,University of Science and Technology of China,Hefei 230026,China;Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology,College ofEngineering Physics,Shenzhen Technology University,Shenzhen 518118,China)

机构地区：[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

出　　处：《Chinese Physics B》2024年第9期374-382,共9页中国物理B（英文版）

基　　金：the National Key Research and Development Pro-gram of China(Grant No.2019YFA0307700);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 

分 类 号：O562[理学—原子与分子物理]