摘要
A high-power laser ablating solid targets induces giant electromagnetic pulses(EMPs),which are intimately pertinent to laser parameters,such as energy and pulse width.In this study,we reveal the features of EMPs generated from a picosecond(ps)laser irradiating solid targets at the SG-Ⅱpicosecond petawatt(PSPW)laser facility.The laser energy and pulse,as well as target material and thickness,show determinative effects on the EMPs’amplitude.More intense EMPs are detected behind targets compared to those at the other three positions,and the EMP amplitude decreases from 90.09 kV/m to 17.8 kV/m with the gold target thickness increasing from 10μm to 20μm,which is suppressed when the laser pulse width is enlarged.The results are expected to provide more insight into EMPs produced by ps lasers coupling with targets and lay the foundation for an effective EMP shielding design in high-power laser infrastructures.
作者
牛爱慧
康宁
许国潇
谢佳节
滕建
刘会亚
孙明营
李廷帅
Ai-Hui Niu;Ning Kang;Guo-Xiao Xu;Jia-Jie Xie;Jian Teng;Hui-Ya Liu;Ming-Ying Sun;Ting-Shuai Li(School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu 611731,China;Key Laboratory on High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Collaborative Innovation Center of IFSA,Shanghai Jiao Tong University,Shanghai 200240,China;University of Chinese Academy of Sciences,Beijing 100049,China;Science and Technology on Plasma Physics Laboratory,Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900,China)
基金
Project supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA25020205)
the program of Science and Technology on Plasma Physics Laboratory,China Academy of Engineering Physics(Grant No.6142A04220108)。
