Spatial degradation of pulse contrast in the focal plane for pulsed laser beams from chirped-pulse amplification system

被引：5

作者：

Yang, Qingwei ^{[1
]}

Liu, Mingwei ^{[2
]}

Wang, Yanhai ^{[3
]}

Xie, Xinglong ^{[1
]}

Guo, Ailin ^{[1
]}

Lin, Zunqi ^{[1
]}

机构：

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

[2] Hunan Univ Sci & Technol, Sch Phys, Changsha 411201, Hunan, Peoples R China

[3] Hebei Univ Sci & Technol, Coll Sci, Shijiazhuang 050018, Peoples R China

来源：

OPTIK | 2012年 / 123卷 / 19期

关键词：

Chirped pulse amplification; Pulse contrast ratio; Beam focusing; TEMPORAL CONTRAST; COMPRESSION; ENHANCEMENT; GRATINGS; SIZE;

D O I：

10.1016/j.ijleo.2012.04.018

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A two-dimension model is presented to analyze the spatial dependence of pulse contrast in the focal plane. The parameters of the SHENGUANG (SG) II laser system are demonstrated as examples. Comparing with the degradation in the beam centroid, the pulse contrast degrades more seriously in the transverse. This spatial degradation of pulse contrast can be improved, such as by controlling the spatial spectrum clipping. (C) 2012 Elsevier GmbH. All rights reserved.

引用

页码：1704 / 1706

页数：3

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