摘要
Generation of nonlinear structures,such as stimulated Raman side scattering waves,post-solitons and electron vortices,during ultra-short intense laser pulse transportation in near-critical-density(NCD)plasmas is studied by using multidimensional particle-in-cell(PIC)simulations.In two-dimensional geometries,both P-and S-polarized laser pulses are used to drive these nonlinear structures and to check the polarization effects on them.In the S-polarized case,the scattered waves can be captured by surrounding plasmas leading to the generation of post-solitons,while the main pulse excites convective electric currents leading to the formation of electron vortices through Kelvin-Helmholtz instability(KHI).In the P-polarized case,the scattered waves dissipate their energy by heating surrounding plasmas.Electron vortices are excited due to the hosing instability of the drive laser.These polarization dependent physical processes are reproduced in two different planes perpendicular to the laser propagation direction in three-dimensional simulation with linearly polarized laser driver.The current work provides inspiration for future experiments of laser-NCD plasma interactions.
作者
Dong-Ning Yue
Min Chen
Yao Zhao
Pan-Fei Geng
Xiao-Hui Yuan
Quan-Li Dong
Zheng-Ming Sheng
Jie Zhang
岳东宁;陈民;赵耀;耿盼飞;远晓辉;董全力;盛政明;张杰(School of Sciences,Harbin Institute of Technology at Weihai,Weihai 264209,China;Key Laboratory for Laser Plasmas(Ministry of Education),School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;Collaborative Innovation Center of IFSA,Shanghai Jiao Tong University,Shanghai 200240,China;Key Laboratory of High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Tsung-Dao Lee Institute,Shanghai 200240,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.11991074,11774227,12005287,and 12135009)
NSAF of China(Grant No.U1930111)
the Natural Science Foundation of Shandong Province,China(Grant No.ZR2019ZD44)
the Strategic Priority Research Program of Chinese Academy of Sciences(Grant Nos.XDA25000000 and XDA25050800)。
