化学增透膜激光疲劳损伤效应  

Laser fatigue damage effect on chemical antireflection film

作　　者：蒋勇 贾奎[2] 邱荣 廖威 晏良宏[4] 王毕艺[5] 官上洪[5] 郭德成[1,2,3] 周强[1,2,3] 袁晓东 Jiang Yong;Jia Kui;Qiu Rong;Liao Wei;Yan Lianghong;Wang Biyi;Guan Shanghong;Guo Decheng;Zhou Qiang;Yuan Xiaodong(Sichuan Civil-military Integration Institute,Mianyang 621010,China;School of Science,Southwest University of Science and Technology,Mianyang 621010,China;Joint Laboratory for Extreme Conditions Matter Properties,Southwest University of Science and Technology-Research Center of Laser Fusion,CAEP,Mianyang 621010,China;Research Center of Laser Fusion,CAEP,Mianyang 621900,China;Science and Technology on Electro-Optical Information Security Control Laboratory,Tianjing 300308,China)

机构地区：[1]四川省军民融合研究院,四川绵阳621010 [2]西南科技大学理学院,四川绵阳621010 [3]西南科技大学-中国工程物理研究院激光聚变研究中心极端条件物质特性联合实验室,四川绵阳621010 [4]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [5]光电信息控制和安全技术重点实验室,天津300308

出　　处：《强激光与粒子束》2018年第10期11-15,共5页High Power Laser and Particle Beams

基　　金：四川省大学生创新创业训练资助项目(17CXCY64);国家自然科学基金项目(61505170;61775235;61705205;U1530109;61505171);西南科技大学龙山人才计划资助项目(17LZX669;18LZX516)

摘　　要：疲劳效应是诱导高功率固体激光装置中光学元件激光损伤的因素之一,目前对Si O2化学增透膜激光诱导疲劳损伤的研究鲜见报道。基于此,本文采用单一激光能量多发次辐照和多梯度激光能量多发次辐照两种不同的激光辐照方式,研究1064 nm化学增透膜层的激光疲劳损伤效应及特征。研究结果表明,在单一激光能量多发次脉冲激光辐照下,膜层最易发生疲劳损伤;采用多梯度激光能量多发次辐照的方式,可以有效地提升膜层的损伤阈值,进而提升膜层的抗激光疲劳损伤性能。Fatigue effect is one of the factors leading to the damage of chemical film on optical components in high power laser system.However,few attentions are given on this issue.In this work,two irradiation types,single fluences with multi-shots and multi-gradient fluence with multi-shots,are utilized to investigate the characteristics and effect of laser fatigue damage on antireflection film at 1064 nm.The results indicate that fatigue damage is easy to occur on film under multi-shot laser irradiation.While the damage threshold and the resistance of fatigue effect can be effectively improved at the multi-gradient fluence with multi-shots.The results can provide references on methods and technique to improve the resistance ability and resist the fatigue damage of film.

关 键 词：疲劳损伤 化学增透膜 激光辐照 损伤阈值 

分 类 号：O439[机械工程—光学工程]