Thermal effect of high-power laser propagation in complex channels and its mitigation

doi:10.1364/OE.506266

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	Thermal effect of high-power laser propagation in complex channels and its mitigation
	X. Huang; F. Xu; X. Cheng and S. Shao
	2023
发表期刊	Optics Express
ISSN	10944087
卷号	31 期号:25 页码:41919-41939
摘要	We investigate the channel thermal effect resulting from the gas thermal blooming effect and mirror thermal deformation on the beam quality, and we propose a mitigation measure for blowing purge gases. Without gas blowing, the gas thermal blooming effect opposes the influence of mirror thermal deformation on the beam phase, resulting in significant phase distortion and offset. Noticeable distortion and divergence of the laser spot was also observed. After blowing purge gases, the beam phase was primarily determined by the mirror thermal deformation. Simultaneously, the mean-squared beam width decreased uniformly, improving the symmetry and energy concentration of the laser spot. However, the laser spot tended to stabilize when the gas velocity exceeded a certain threshold. © 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
DOI	10.1364/OE.506266
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收录类别	sci ; ei
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67539
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X. Huang,F. Xu,X. Cheng and S. Shao. Thermal effect of high-power laser propagation in complex channels and its mitigation[J]. Optics Express,2023,31(25):41919-41939.
APA	X. Huang,F. Xu,&X. Cheng and S. Shao.(2023).Thermal effect of high-power laser propagation in complex channels and its mitigation.Optics Express,31(25),41919-41939.
MLA	X. Huang,et al."Thermal effect of high-power laser propagation in complex channels and its mitigation".Optics Express 31.25(2023):41919-41939.

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