Suppression of nanosecond prepulses from regenerative amplifier and multipass amplifiers in the SULF-1PW laser

作     者：白培乐 张宗昕 王新亮 钱佳毅 朱佳诚 吴分翔 胡家兵 杨晓骏 归佳彦 陆效明 刘彦祺 许毅 梁晓燕 冷雨欣 李儒新 Peile Bai;Zongxin Zhang;Xinliang Wang;Jiayi Qian;Jiacheng Zhu;Fenxiang Wu;Jiabing Hu;Xiaojun Yang;Jiayan Gui;Xiaoming Lu;Yanqi Liu;Yi Xu;Xiaoyan Liang;Yuxin Leng;Ruxin Li

作者机构：State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser ScienceShanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2024年第22卷第5期

页      面：75-79页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 080902[工学-电路与系统] 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] 

基　　金：This work was supported by the National Key R&D Program of China(Nos.2017YFE0123700 and 2022YFA1604401) the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB1603) the National Natural Science Foundation of China(Nos.61925507 and 62375273) the Program of Shanghai Academic/Technology Research Leader(No.18XD1404200) the Shanghai Municipal Science and Technology Major Project(No.2017SHZDZX02) 

主　　题：high-peak-power femtosecond laser nanosecond prepulses temporal contrast 

摘      要：In this research,we report the latest progress in the suppression of nanosecond prepulses from regenerative amplifier and multipass amplifiers in the SULF-1PW *** prepulse generated from the Pockels cell(PC)in a regenerative amplifier is delay-shifted by enlarging the distance between the PC and the nearby cavity mirror,and then removed by the extra pulse pickers outside the regenerative *** prepulses arising from multipass amplifiers are also further suppressed by adopting a novel amplifier configuration and properly rotating the Ti:sapphire *** the optimizations,the temporal contrast on a nanosecond time scale is promoted to be better than a contrast level of 10^(-9).This research can provide beneficial guidance for the suppression of nanosecond prepulses in the high-peak-power femtosecond laser systems.