Study of thermal behaviors in CO2 laser irradiated glass

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 > 光学薄膜技术研究与发展中心

	Study of thermal behaviors in CO2 laser irradiated glass
	Wei CY ; He HB(贺洪波) ; Deng Z ; Shao JD(邵建达) ; Fan ZX(范正修)
刊名	opt. eng.
	2005
卷号	44 期号:4 页码:44202
关键词	laser induced damage temperature field stress
ISSN号	0091-3286
中文摘要	to understand mechanisms underlying laser-induced damage of bk7 and fused silica, we calculate the temperature field of the substrates with co2 laser irradiating at a given laser power and beam radius. we find that the two glasses show different thermal behaviors. a model is developed for estimating the time t to heat the surface of the substrates up to a particular temperature t with cw co2 laser irradiation. we calculate theoretically the duration t that the samples are irradiated, from the beginning to visual catastrophic damage, with the assumption of damage threshold determined by the critical temperature. the duration t that the samples are irradiated, from the beginning to visual catastrophic damage, is investigated experimentally as well. here we take the melting point or softening point as the critical temperature, given the thermomechanical coupling properties, which is enough to cause damage for bk7. damage features are characterized by the sound of visual cracks. finally, we calculate stresses induced by laser heating. the analysis of stress indicates that the damage of bk7 is due to the stresses induced by laser heating. (c) 2005 society of photo-optical instrumentation engineers.
学科主题	光学薄膜
收录类别	EI
语种	英语
公开日期	2009-09-22 ; 2010-10-12
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/4134]
专题	上海光学精密机械研究所_光学薄膜技术研究与发展中心
推荐引用方式 GB/T 7714	Wei CY,He HB,Deng Z,et al. Study of thermal behaviors in CO2 laser irradiated glass[J]. opt. eng.,2005,44(4):44202.
APA	Wei CY,贺洪波,Deng Z,邵建达,&范正修.(2005).Study of thermal behaviors in CO2 laser irradiated glass.opt. eng.,44(4),44202.
MLA	Wei CY,et al."Study of thermal behaviors in CO2 laser irradiated glass".opt. eng. 44.4(2005):44202.