Large temporal window and high-resolution single-shot cross-correlator with two separate measurement channels  

作　　者：Jingui Ma Xiaoping Ouyang Liangze Pan Peng Yuan Dongfang Zhang Jing Wang Guoqiang Xie Jianqiang Zhu Liejia Qian 

机构地区：[1]Key Laboratory for Laser Plasmas(MOE),Collaborative Innovation Center of IFSA,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai,China [2]Joint Laboratory of High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai,China [3]Tsung-Dao Lee Institute,Shanghai Jiao Tong University,Shanghai,China

出　　处：《High Power Laser Science and Engineering》2022年第6期75-83,共9页高功率激光科学与工程（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)(Nos.61727820 and 62122049);the Science and Technology Commission of Shanghai Municipality(Nos.21QA1404600 and 22JC1401900);the Strategic Priority Research Program of the Chinese Academy of Sciences,China(No.XDA25020306);Jingui Ma would like to thank the sponsorship of the Yangyang Development Fund。

摘　　要：In strong-field physics experiments with ultraintense lasers,a single-shot cross-correlator(SSCC)is essential for fast optimization of the pulse contrast and meaningful comparison with theory for each pulse shot.To simultaneously characterize an ultrashort pulse and its long pedestal,the SSCC device must have both a high resolution and a large temporal window.However,the resolution and window in all kinds of single-shot measurement contradict each other in principle.Here we propose and demonstrate a novel SSCC device with two separate measurement channels:channel-1 for the large-window pedestal measurement has a moderate resolution but a large window,while channel-2 for the ultrashort pulse measurement has a small window but a high resolution;this allows the accurate characterization of the pulse contrast in a single shot.A two-channel SSCC device with a 200-fs resolution and 114-ps window has been developed and tested for its application in ultraintense lasers at 800 nm.

关 键 词：pulse contrast single-shot cross-correlator ultrashort ultraintense laser 

分 类 号：TN24[电子电信—物理电子学]