表面颗粒污染物诱导薄光学元件初始损伤的机理

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

	表面颗粒污染物诱导薄光学元件初始损伤的机理
	孙晓艳 ; 雷泽民 ; 卢兴强 ; 范滇元
刊名	物理学报
	2014
卷号	63 期号:13 页码:134201
关键词	激光损伤光传输颗粒污染物热变形
其他题名	Mechanism of original damage of thin optical components induced by surface particle contamination
通讯作者	Lu, XQ (reprint author), Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Natl Lab High Power Laser & Phys, Shanghai 201800, Peoples R China.
中文摘要	基于光传输理论研究了前表面颗粒污染物诱导薄光学元件产生初始损伤的原因，提出了颗粒遮光效应和颗粒造成的光学元件局部热变形两者共同作用对光束进行扰动的损伤机理.研究结果表明：对于高功率激光光束，薄光学元件局部热变形对光束的扰动是产生较高光强调制的重要原因；随着激光脉冲发射次数的增加，局部热变形的表面形状、位相延迟幅度、热扩散长度不断变化，会在光学元件内不同厚度处和后表面xy方向上的不同位置处产生较高的光强调制，不仅容易引起后表面产生多个损伤点，也可能在光学元件内就产生损伤，并且在厚度方向上的损伤点是分散的.
英文摘要	Based on the optical transmission theory, the reason why front-surface particle contamination may induce the original damage of thin optical components is considered, and a damage mechanism is put forward: The localized thermal deformation of an optical element induced by the thermal effect of particle contamination together with the shading effect of it can disturb the laser beams. Simulated results show that for a high power laser, the localized thermal deformation of thin optical components, which disturbs the laser beam, is an important cause to produce strong light intensity modulations. The surface shape, phase delay, and thermal diffusion length of a localized thermal deformation are constantly changing with the increase of laser pulse shot number, so the highest light intensity modulation will be produced at different positions in the thickness direction or the xy direction on the rear-surface of an optical element. This not only can easily induce some damages on the rear-surface of the optical element, but also cause the interior damages scattered in the thickness direction.
收录类别	SCI
语种	中文
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.siom.ac.cn/handle/181231/12552]
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	1.[Sun Xiao-Yan 2.Lei Ze-Min 3.Lu Xing-Qiang 4.Fan Dian-Yuan] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Natl Lab High Power Laser & Phys, Shanghai 201800, Peoples R China 5.[Sun Xiao-Yan 6.Lei Ze-Min] Sch Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	孙晓艳,雷泽民,卢兴强,等. 表面颗粒污染物诱导薄光学元件初始损伤的机理[J]. 物理学报,2014,63(13):134201.
APA	孙晓艳,雷泽民,卢兴强,&范滇元.(2014).表面颗粒污染物诱导薄光学元件初始损伤的机理.物理学报,63(13),134201.
MLA	孙晓艳,et al."表面颗粒污染物诱导薄光学元件初始损伤的机理".物理学报 63.13(2014):134201.