红外与毫米波学报2012，Vol.31Issue(4)：330-335,6.DOI:10.3724/SP.J.1010.2012.00330
多波长飞秒激光损伤可见光滤光片的实验及机理
Damage and its mechanism to the visible wavelength filter irradiated by femtosecond laser
摘要
Abstract
The mechanism of damage to the optical coatings of filters induced by femtosecond laser at different wavelengths was studied. A near infrared wavelength tunable femtosecond laser was used to rediate the visible wavelength filter from backside. The wavelengths were selected in the transitional region of the filter pass band and the corresponding threholds of average power density were obtained. Based on the avalanche ionization process, the relationship between damage threshold and distribution of interference field was investigated. The theoretical results can predict the trend of thresholds. The results indicate that the damage behavior of a coating irradiated by femtosecond laser pulses exhibits an overall behavior. The damage threshold decreases with the increase of transient residual energy in the multi-layer structure of the coating.关键词
激光损伤/飞秒激光/光学薄膜/损伤阈值/干涉场Key words
laser damage/ femtosecond laser/ optical coating/ damage threshold/ interference field分类
通用工业技术引用本文复制引用
朱志武,程湘爱,王东,黄良金,刘泽金..多波长飞秒激光损伤可见光滤光片的实验及机理[J].红外与毫米波学报,2012,31(4):330-335,6.基金项目
国家自然科学基金(11004247) （11004247）
