Laser parameters affecting the asymmetric radiation of the electron in tightly focused intense laser pulses  

作　　者：李星宇 夏婉瑜 田友伟 任山令 Xing-Yu Li;Wan-Yu Xia;You-Wei Tian;Shan-Ling Ren(Bell Honors School,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;College of Management,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;College of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]Bell Honors School,Nanjing University of Posts and Telecommunications,Nanjing 210023,China [2]College of Management,Nanjing University of Posts and Telecommunications,Nanjing 210023,China [3]College of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

出　　处：《Chinese Physics B》2023年第12期348-360,共13页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.10947170/A05 and 11104291);Natural Science Fund for Colleges and Universities in Jiangsu Province (Grant No.10KJB140006);Natural Science Foundation of Shanghai (Grant No.11ZR1441300);Natural Science Foundation of Nanjing University of Posts and Telecommunications (Grant No.NY221098);sponsored by the Jiangsu Qing Lan Project and STITP Project (Grant No.CXXYB2022516)。

摘　　要：The nonlinear radiation of the electron is a distinctive feature of the action of tightly focused linearly polarized lasers.In this paper,from the perspective of radiation symmetry,the effect of laser parameters on the electron radiation power in the time domain is studied systematically.An asymmetric bimodal structure is found in the time domain in the direction of the maximum radiation.For this special structure,an explanation is given based on the electron dynamics perspective.The structure is compared with the symmetric bimodal structure in the classical theory.The increase in laser intensity,while significantly increasing the radiated power of the electron,exacerbates the asymmetry of the electron radiation.The variation in the initial phase of the laser leads to a periodic variation in the electron motion,which results in a periodic extension of the electron spatial radiation with a period ofπ.Moreover,the existence of jump points with a phase difference ofπin the range of 0-2πis found.The increase in pulse width reduces the radiated power,extends the radiation range,and alleviates the radiation asymmetry.The results in this paper contribute to the study of electron radiation characteristics in intense laser fields.

关 键 词：laser optics nonlinear Thomson scattering tightly focused laser asymmetric radiation 

分 类 号：TN24[电子电信—物理电子学]