基于激光振镜的高稳定辐照度定标光源  

Highly-stable solar irradiance calibration light source based on laser galvanometer

作　　者：林雨辰 董航 叶新[1] 费义艳 张程睿 方伟[1] 衣小龙 LIN Yuchen;DONG Hang;YE Xin;FEI Yiyan;ZHANG Chengrui;FANG Wei;YI Xiaolong(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of the Chinese Academy of Sciences,Beijing 100049,China;Department of Optical Science and Engineering,School of Information Science and Engineering,Fudan University,Shanghai 200433,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学,北京100049 [3]复旦大学信息科学与工程学院光科学与工程系,上海200433

出　　处：《应用光学》2024年第1期206-214,共9页Journal of Applied Optics

基　　金：国家自然科学基金资助项目(42001316);国家重点研发计划(2022YFB3903200,2022YFB3903203);国家自然科学基金(32271510);上海自然科学基金(20ZR1403700);吉林省自然科学基金(20220101165JC);长春光机所-复旦大学合作基金(FC2020-004)。

摘　　要：获取高均匀性、高稳定性的光源是太阳绝对辐射计辐射照度定标的关键技术,实验室现有光源无法同时满足均匀性与稳定性。因此,该文提出通过振镜扫描的方式来获取高均匀、高稳定的面光源方案。首先,建立二维激光扫描模型,设计以快速扫描振镜和离轴抛面镜为核心的光学系统;其次,根据振镜扫描系统建立驱动,开发控制软件,设计三种扫描路径;最后,选取合适的扫描路径进行实验验证,并开展其均匀性、稳定性等方面的测试。实验结果表明:振镜扫描光斑的不均匀性优于±1%,发散角小于±0.26°,光源稳定性优于0.02%。验证了激光振镜扫描光源可作为绝对辐射计辐照度定标光源的可行性,为实现高精度太阳辐照度定标提供关键技术支撑及实验依据。Obtaining the light source with high uniformity and high stability is the key technology for the radiometric calibration of solar absolute radiometer.The existing light source in the laboratory cannot meet the uniformity and stability at the same time.Therefore,it was proposed to obtain a highly uniform and stable surface light source through galvanometer scanning.Firstly,the two-dimensional laser scanning mode was established,and the optical system with fast scanning galvanometer and off-axis mirror as the core was designed.Secondly,according to the galvanometer scanning system,the driver was established,the control software was developed,and three scanning paths were designed.Finally,the appropriate scanning path was selected for experimental verification and its uniformity and stability was tested.The experimental results show that the non-uniformity of the scanning spot of the galvanometer is better than±1%,the divergence angle is less than±0.26°,and the stability of the light source is better than 0.02%.The feasibility of the laser galvanometer scanning light source as the irradiance calibration light source of the absolute radiometer is verified,which provides key technical support and experimental basis for achieving high-precision solar irradiance calibration.

关 键 词：太阳绝对辐射计 振镜扫描 离轴准直 高均匀性 高稳定性 

分 类 号：TN206[电子电信—物理电子学]