Research on the pre-pulses caused by post-pulses in the optical parametric chirped-pulse amplifier

被引：5

作者：

Chen, Haidong ^{[1
,2
,3
]}

Wang, Xinliang ^{[1
,2
]}

Liu, Xingyan ^{[1
,2
]}

Chen, Xun ^{[1
,2
,3
]}

Bai, Peile ^{[1
,2
,3
]}

Pan, Shuren ^{[1
,2
,3
]}

Hu, Liang ^{[1
,2
,3
]}

Hu, Jiabing ^{[1
,2
]}

Wu, Fenxiang ^{[1
,2
]}

Zhang, Zongxin ^{[1
,2
]}

Liu, Yanqi ^{[1
,2
]}

Xu, Yi ^{[1
,2
]}

Leng, Yuxin ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China

[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

来源：

OPTICS EXPRESS | 2023年 / 31卷 / 24期

基金：

中国国家自然科学基金;

关键词：

HIGH-CONTRAST; LASER; PW; DEGRADATION;

D O I：

10.1364/OE.506896

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Pre-pulses caused by the post-pulses in the optical parametric chirped-pulse amplifier were comprehensively studied for the first time, including the underlying mechanism for the delay-shift of pre-pulses, the intensity variation of pre-pulses affected by the initial delay of post-pulses and the pump energy, and also the nonlinear beat noise. The simulation and measurement confirmed that the high-order dispersion of the pulse stretcher was the main cause for the delay-shift of pre-pulses, which should be similar with the chirped-pulse amplifiers. The intensity of pre-pulses would decrease significantly as the initial delay of post-pulses increased, but would increase with the growth of pump energy. Moreover, the temporal position of the nonlinear beat noise in the experiment was successfully predicted by our simulation. This work could help us better understand the pre-pulses in OPCPA and provide helpful guidance for designing high-contrast laser systems.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：40285 / 40292

页数：8

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