光学镜面污染颗粒吸收特性的影响分析  

Analysis of absorption characteristics of polluted particles on optical mirrors

作　　者：王翔 张科鹏 陈壮 张彬[1] 陈坚 赵建华 Wang Xiang;Zhang Kepeng;Chen Zhuang;Zhang Bin;Chen Jian;Zhao Jianhua(College of Electronics and Information Engineering,Sichuan University,Chengdu 610064,China;Institute of Photoelectric Technology,Chinese Academy of Sciences,Chengdu 610209,China;Anhui Province Key Laboratory of Non-Destructive Evaluation,Hefei 230031,China)

机构地区：[1]四川大学电子信息学院,四川成都610064 [2]中国科学院光电技术研究所,四川成都610209 [3]超光滑表面无损检测安徽省重点实验室,安徽合肥230031

出　　处：《红外与激光工程》2020年第4期213-219,共7页Infrared and Laser Engineering

基　　金：中国科学院自适应光学重点实验室基金(LAOF1801);天津市薄膜光学重点实验室开放基金课题(kjwx170620);四川省科技计划项目(2018JY0553)。

摘　　要：针对实际工作中的光学元件表面粒子污染,以米氏理论为基础,分析了在风沙地区空气中污染颗粒(以SiO2为主)对入射激光能量的吸收效应。此外,进一步分析空气洁净度、元件工作面的朝向以及放置时间等对光学元件表面吸收特性的影响。结果表明,空气洁净度等级越高、元件工作面朝上、放置时间越久,光学元件的表面吸收能力越强。研究成果可为实际应用中光学系统的镜面污染控制提供理论参考。Aiming at the particle contamination on the surface of optical components in practical work, based on Mie theory, the absorption of incident laser energy by polluted particles(mainly SiO2) in the air in sandy areas was discussed. In addition, the effects of air cleanliness, orientation of working face and placement time on the surface absorption characteristics of optical components were further analyzed. The results show that the higher the air cleanliness level is, the optical component face up and the longer exposure time are, would make the surface absorption of the optical component stronger. The research results can provide guidance for pollution control of optical system in practical applications.

关 键 词：吸收 光学元件 米氏理论 洁净度 

分 类 号：O436[机械工程—光学工程]