Mitigation of beam sampling grating damage induced by upstream flaws in the final optics assembly

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 高功率激光物理国家实验室

	Mitigation of beam sampling grating damage induced by upstream flaws in the final optics assembly
	Zhao, Dongfeng; Jiao, Zhaoyang; Sun, Mingying; Zhu, Jianqiang
刊名	Opt. Eng.
	2017
卷号	56 期号:1
通讯作者	zhyjiao@siom.ac.cn
英文摘要	The high fluence performance of high-power laser systems is set by optical damage, especially in the final optics assembly (FOA). The flaws on the frequency converter surface can cause optical intensity intensification and, therefore, damage the downstream optical elements, such as the beam sampling grating (BSG), which is an important component in the FOA. Mitigation of BSG damage caused by flaws is discussed. Physical models are established to simulate the optical field enhancement on BSG modulated by the upstream flaw, considering both the linear and nonlinear propagation effects. Numerical calculations suggest that it is important to place the BSG in a properly selected position to mitigate the laser-induced damage. Furthermore, strict controls of flaw size, modulation depth, distance between frequency converter and focusing lens, and the thickness of the focusing lens are also significant to mitigate the BSG damage. The results obtained could also give some suggestions for damage mitigation of optical components and the layout design of the final optics assembly. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
收录类别	SCI
资助信息	Collaboration on Advance Key Techniques for Inertial Fusion Energy [2012DFG62040]; National Natural Science Foundation of China [11104296]
WOS记录号	WOS:000396389400024
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/27971]
专题	上海光学精密机械研究所_高功率激光物理国家实验室
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Zhao, Dongfeng,Jiao, Zhaoyang,Sun, Mingying,et al. Mitigation of beam sampling grating damage induced by upstream flaws in the final optics assembly[J]. Opt. Eng.,2017,56(1).
APA	Zhao, Dongfeng,Jiao, Zhaoyang,Sun, Mingying,&Zhu, Jianqiang.(2017).Mitigation of beam sampling grating damage induced by upstream flaws in the final optics assembly.Opt. Eng.,56(1).
MLA	Zhao, Dongfeng,et al."Mitigation of beam sampling grating damage induced by upstream flaws in the final optics assembly".Opt. Eng. 56.1(2017).