Transmission Degradation of Femtosecond Laser Pulses in Opened Cone Targets

作     者：LIU Feng LIN Xiaoxuan LIU Bicheng DING Wenjun DU Fei LI Yutong MA Jinglong LIU Xiaolong SHENG Zhengming CHEN Liming LU Xin DONG Quanli WANG Weimin WANG Zhaohua WEI Zhiyi CHEN Jiaer ZHANG Jie 刘峰;林晓宣;刘必成;丁文君;杜飞;李玉同;马景龙;刘晓龙;盛政明;陈黎明;鲁欣;董全力;王伟民;王兆华;魏志义;陈佳洱;张杰

作者机构：Institute of PhysicsChinese Academy of SciencesBeijing 100190China Key Laboratory for Laser Plasmas(MoE)and Department of PhysicsShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Nuclear Physics and TechnologyInstitute of Heavy Ion PhysicsPeking UniversityBeijing 100871China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2012年第14卷第1期

页      面：24-27页

核心收录：

学科分类：080901[工学-物理电子学] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by National Natural Science Foundation of China(Nos.10925421 10735050 10974250 10935002) 

主　　题：femtosecond laser pulse cone target transmission ratio 

摘      要：Irradiated by femtosecond laser pulses with different energies, opened cone targets behave very differently in the transmission of incident laser pulses. The targets, each with an opening angle of 71° and an opening of 5 μm, are fabricated using standard semiconductor technology. When the incident laser energy is low and no pre-plasma is generated on the side walls of the cones, the cone target acts like an optical device to reflect the laser pulse, and 15% of the laser energy can be transmitted through the cones. In contrast, when the incident laser energy is high enough to generate pre-plasmas by the pre-pulse of the main pulse that fills the inner cone, the cone with the plasmas will block the transmission of the laser, which leads to a decrease in laser transmission compared with the low-energy case with no plasma. Simulation results using optical software in the low-energy case, and using the particle-in-cell code in the high-energy case, are primarily in agreement with the experimental results.