摘要
We study the above-threshold ionization(ATI)process of atoms exposed to fundamental and high-frequency lasers with arbitrary ellipticity by applying the frequency-domain theory.It is found that the angular-resolved ATI spectrum is sensitive to ellipticities of two lasers and emitted angles of the photoelectron.Particularly for the photon energy of the highfrequency laser more than atomic ionization potential,the width of plateau tends to a constant with increasing ellipticity of fundamental field,the dip structure disappears with increasing ellipticity of the high-frequency field.With the help of the quantum channel analysis,it is shown that the angular distribution depends mainly on the ellipticity of high-frequency field in the case that its frequency is high.Moreover,one can see that the maximal and minimal energies in quantum numerical results are in good agreement with the classical prediction.Our investigation may provide theoretical support for experimental research on polarization control of ionization in elliptically polarized two-color laser fields.
作者
金发成
杨慧慧
宋晓红
李飞
杜玲玲
薛红杰
魏丽敏
白悦
刘浩翔
王兵兵
杨玮枫
Fa-Cheng Jin;Hui-Hui Yang;Xiao-Hong Song;Fei Li;Ling-Ling Du;Hong-Jie Xue;Li-Min Wei;Yue Bai;Hao-Xiang Liu;Bing-Bing Wang;Wei-Feng Yang(Faculty of Science,Xi'an Aeronautical Institute,Xi'an 710077,China;School of Physics and Optoelectronic Engineering,Hainan University,Haikou 570288,China;Center for Theoretical Physics,Hainan University,Haikou 570288,China;Laboratory of Optical Physics,Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;College of Science,Shantou University,Shantou 515063,China;University of Chinese Academy of Sciences,Beijing 100049,China)
基金
Project supported by the National Natural Science Foundation of China (Grant Nos.12104285,12074240,12204135,12374260,12264013,12204136,92250303,and 12074418)
the Guangdong Basicand Applied Basic Research Foundation (Grant No.2022A1515011742)
the Special Scientific Research Program supported by the Shaanxi Education Department (Grant No.22JK0423)
the Natural Science Basic Research Program of Shaanxi Province of China (Grant Nos.2023-JC-QN-0085 and 2023-JC-QN-0267)
the Hainan Provincial Natural Science Foundation of China (Grant Nos.122CXTD504,123MS002,123QN179,123QN180,and 122QN217)
the Sino-German Mobility Programme (Grant No.M-0031)
the Xi’an Aeronautical Institute 2023 Innovation and Entrepreneurship Training Program for college students (Grant No.S202311736036)
the Course Ideological and Political Education Program (Grant No.23ZLGC5030)。