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

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Abstract

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 (4PO) 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.

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DOI:10.1017/hpl.2020.28

所属栏目:Research Articles

基金项目:The authors thank National Key Research and Development Program of China (No. 2017YFB0405100), National Natural Science Foundation of China (No. 61975087), and Beijing Young Talents Support Project (No. 2017000020124G044).

收稿日期:2020-04-27

录用日期:2020-06-24

网络出版日期:2020-09-21

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Tinghao Liu:Key Laboratory of Photonic Control Technology (Tsinghua University), Ministry of Education, Beijing 100084, China;State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
Qiang Liu:Key Laboratory of Photonic Control Technology (Tsinghua University), Ministry of Education, Beijing 100084, China;State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
Zhan Sui:Shanghai Institute of Laser Plasma, China Academy of Engineering Physics, Shanghai 201800, China
Mali Gong:Key Laboratory of Photonic Control Technology (Tsinghua University), Ministry of Education, Beijing 100084, China;State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
Xing Fu:Key Laboratory of Photonic Control Technology (Tsinghua University), Ministry of Education, Beijing 100084, China;State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China

联系人作者:Xing Fu(fuxing@mail.tsinghua.edu.cn)

备注:The authors thank National Key Research and Development Program of China (No. 2017YFB0405100), National Natural Science Foundation of China (No. 61975087), and Beijing Young Talents Support Project (No. 2017000020124G044).

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引用该论文

Tinghao Liu, Qiang Liu, Zhan Sui, Mali Gong, and Xing Fu, "Spatiotemporal characterization of laser pulse amplification in double-pass active mirror geometry," High Power Laser Science and Engineering 8(3), e30 (2020)

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