Spatiotemporal characterization of laser pulse amplification in double-pass active mirror geometry  

作　　者：Tinghao Liu Qiang Liu Zhan Sui Mali Gong Xing Fu 

机构地区：[1]Key Laboratory of Photonic Control Technology(Tsinghua University),Ministry of Education,Beijing 100084,China [2]State Key Laboratory of Precision Measurement Technology and Instruments,Department of Precision Instrument,Tsinghua University,Beijing 100084,China [3]Shanghai Institute of Laser Plasma,China Academy of Engineering Physics,Shanghai 201800,China

出　　处：《High Power Laser Science and Engineering》2020年第3期16-30,共15页高功率激光科学与工程（英文版）

基　　金：National Key Research and Development Program of China(No.2017YFB0405100);National Natural Science Foundation of China(No.61975087);Beijing Young Talents Support Project(No.2017000020124G044)。

摘　　要：We present a spatiotemporal model of pulse amplification in the double-pass active mirror(AM)geometry.Three types of overlap condition are studied,and the spatiotemporal scaling under the four-pulse overlapping(4 PO)condition is fully characterized for the first time,by mapping the temporal and spatial segments of beam to the instantaneous gain windows.Furthermore,the influence of spatiotemporal overlaps on the amplified energy,pulse distortion and intensity profile is unraveled for both AM and zigzag configurations.The model,verified by excellent agreement between the predicted and measured results,can be a powerful tool for designing and optimizing high energy multi-pass solid-state laser amplifiers with AM,zigzag and other geometries.

关 键 词：active mirror amplifier pulse overlap spatiotemporal characterization DOUBLE-PASS 

分 类 号：TN722[电子电信—电路与系统]