激光对非λ/4膜系变反射率薄膜的损伤机理  

Laser damage mechanisms of a variable refractivity thin film consisted of nonquarter wavelength film layers

作　　者：倪晓武 陆建[1] 张放[2,3] 马孜 

机构地区：[1]南京理工大学应用物理系 [2]华北光电技术研究所 [3]西南技术物理研究所

出　　处：《激光技术》1998年第5期268-270,共3页Laser Technology

基　　金：国家教委跨世纪优秀人才计划基金;霍英东教育基金会高校青年教师基金;江苏省自然科学基金

摘　　要：讨论了高功率激光对非λ／４膜层组成的变反射率光学介质薄膜损伤时的场作用和热作用的物理机理，并对实际膜层的激光损伤阈值进行了测试。理论和实验研究结果证明，激光对该种膜系产生损伤的主要原因是膜层吸收激光能量引起的。The physics mechanism of field effect and thermal effect on a variable refractivity optical dielectric thin film consisted of nonquarter wavelength film layers irradiated by a beam of high power laser to produce damage have been discussed in this paper,and laser damage thresholds of film layer specimen have been measured.It has been indicated theoretically and experimentally that the thin film absorbing laser energy is a main reason to produce laser damage for this kind of film.

关 键 词：激光产生损伤 光学介质薄膜 热作用 物理机理 

分 类 号：TN24[电子电信—物理电子学]