基于激光振镜的高稳定辐照度定标光源

林雨辰; 董航; 叶新; 费义艳; 张程睿; 方伟; 衣小龙

基于激光振镜的高稳定辐照度定标光源

林雨辰^{1, 2,},
董航^{1, 2},
叶新¹,
费义艳³,
张程睿³,
方伟¹,
衣小龙^1, ,

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

基金项目: 国家自然科学基金资助项目（42001316）；长春光机所-复旦大学合作基金（FC2020-004）；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）

详细信息

作者简介:
林雨辰（1996—），男，硕士研究生，主要从事辐射计量等研究。E-mail：945700739@qq.com

通讯作者:
衣小龙（1988—），男，博士，副研究员，主要从事空间低温辐射计、总辐照度定标研究。E-mail：yxl19880603@126.com

中图分类号: TN206
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出版历程
- 收稿日期: 2023-03-23
- 修回日期: 2023-09-15
- 网络出版日期: 2023-09-22

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

LIN Yuchen^{1, 2
,},
DONG Hang^{1, 2},
YE Xin¹,
FEI Yiyan³,
ZHANG Chengrui³,
FANG Wei¹,
YI Xiaolong^{1
, ,}

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2.
University of the Chinese Academy of Sciences, Beijing 100049, China
3.
Department of Optical Science and Engineering, School of Information Science and Engineering, Fudan University, Shanghai 200433, China

摘要

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。因此本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，建立二维的激光扫描模型，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。
- 太阳绝对辐射计 /
- 振镜扫描 /
- 离轴准直 /
- 高均匀性 /
- 高稳定性
Abstract: Choosing 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, this paper proposes to obtain a highly uniform and stable surface light source through galvanometer scanning. Firstly, the two-dimensional laser scanning mode is established, and the optical system with fast scanning galvanometer and off-axis mirror as the core is designed; Secondly, according to the galvanometer scanning system, the driver is established, the control software is developed, and three scanning paths are designed; Finally, the appropriate scanning path is selected for experimental verification and its uniformity and stability are 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.
- solar absolute radiometer /
- galvanometer scanning /
- off axis alignment /
- high uniformity /
- high stability

HTML全文

图 1 高斯光束振幅分布图

Fig. 1 Distribution diagram of Gaussian beam amplitude

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图 2 高斯光束叠加图

Fig. 2 Superposition diagram of Gaussian beam

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图 3 快速扫描振镜扫描示意图

Fig. 3 Scanning schematic diagram of quick scanning galvanometer

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图 4 $ x $面内光路图

Fig. 4 x-sided optical path diagram

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图 5 $ y $面内光路图

Fig. 5 y-sided optical path diagram

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图 6 振镜几何结构图

Fig. 6 Geometric structure diagram of galvanometer

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图 7 $ x $振镜结构图

Fig. 7 Structure diagram of x galvanometer

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图 8 $ y $振镜结构图

Fig. 8 Structure diagram of y galvanometer

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图 9 $ xy $振镜最大偏角示意图

Fig. 9 Schematic diagram of maximum deflection angle of xy galvanometer

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图 10 各参数与x振镜偏转角度的关系

Fig. 10 Relationship between each parameter and deflection angle of x galvanometer

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图 11 太阳辐照度模拟光源实物图

Fig. 11 Physical drawing of solar irradiance simulation light source

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图 12 1小时内激光稳定性

Fig. 12 Laser stability within 1 hour

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图 13 软件界面

Fig. 13 Interface of software

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图 14 同心圆形状的扫描图样

Fig. 14 Scanning pattern in shape of concentric circle

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图 15 螺旋线扫描图样

Fig. 15 Scanning pattern in shape of helix

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图 16 蛇形扫描图样

Fig. 16 Scanning pattern in shape of serpentine

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图 17 不均匀性评估方法

Fig. 17 Nonuniformity assessment methods

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图 18 外场比对定标装置

Fig. 18 Field comparison for calibration device

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表 1 光斑不均匀性测试数据

Table 1 Test data of spot nonuniformity

区域	信号值（DN）
1	156 680.99
2	156 316.47
3	154 352.91
4	156 778.59
5	157 050.30
6	155 495.04
7	156 448.77
8	156 295.26
9	155 336.07

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表 2 太阳辐射计照度测试数据

Table 2 Test data of solar radiometer illuminance

次数	照度
1	1 431.19 W·m⁻²
2	1 430.57 W·m⁻²
3	1 430.77 W·m⁻²
4	1 430.71 W·m⁻²
5	1 431.23 W·m⁻²
6	1 431.12 W·m⁻²
7	1 431.26 W·m⁻²
8	1 430.55 W·m⁻²
9	1 431.10 W·m⁻²
10	1 431.09 W·m⁻²
平均值	1 430.96 W·m⁻²
标准差	0.28 W·m⁻²
相对标准差	0.000 19%

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