摘要
为了确保低温辐射计测量准确度,开展了低温辐射计光功率修正因子的研究。介绍了低温辐射计测试系统光路结构和光功率的测量过程。分析了影响低温辐射计光电加热等效替代的四个主要因素。利用搭建的影响因子测试装置,对布儒斯特窗口透过率、杂散光和黑体腔吸收率三个影响因子进行了测试;采用有限元分析方法,对光电加热不等效性因子进行了仿真计算。测试和仿真计算了自主研制低温辐射计光电加热等效替代修正因子,结果显示,布儒斯特窗口在632.8 nm处的透过率为0.996817,杂散光修正因子为0.999013,黑体腔吸收率为0.999950,光电不等效性修正因子为1.009240±0.000010。该研究结果可用于低温辐射计的修正,对低温辐射计各功能模块的设计、测量不确定度的提高以及低温辐射计的研制具有一定参考价值。
Optical radiation measurement generally refers to the use of basic measurement technology to establish a direct or indirect connection between the measured optical radiation or photometric parameters and the fundamental physical constants or physical quantities with low measurement uncertainty,so as to improve the reproducibility or measurement level.In the actual substitution process,in order to ensure the measurement accuracy,the factors affecting the equivalent substitution of photoelectric heating need to be corrected.At present,most relevant studies at home and abroad only test and simulate the factors affecting the equivalent substitution of photoelectric heating of cryogenic radiometer from a single aspect,and the technical means adopted have some defects.The 41st Research Institute of China Electrics Technology Group Corporation has developed cryogenic radiometers.In order to ensure the measurement accuracy of cryogenic radiometer,the research on the optical power correction factor of cryogenic radiometer is carried out.The optical path structure of the cryogenic radiometer test system and the measurement process of optical power are introduced.The four main factors affecting the equivalent substitution of photoelectric heating of cryogenic radiometer were analyzed.Brewster window transmittance,stray light,absorbing cavity absorptivity and photoelectric heating non-equivalence are considered to be important sources of uncertainty of cryogenic radiometer.Brewster window transmittance,stray light and blackbody cavity absorption the three influencing factors were tested by using the influencing factor test facility,and the photoelectric heating non-equivalence factor is simulated and calculated by finite element analysis.Aiming at the transmittance and stray light correction factor of Brewster window,the beam alignment and test chamber are used for on-line measurement.With the test chamber,the stray light radiation is indirectly calculated by testing the transmittance of the incident light through the off-ax
作者
史学舜
庄新港
王国权
刘红波
张鹏举
刘长明
周金戈
SHI Xueshun;ZHUANG Xingang;WANG Guoquan;LIU Hongbo;ZHANG Pengju;LIU Changming;ZHOU Jinge(The 41st Research Institute of CETC,Qingdao 266555,China;National Opto-Electronic Primary Metrology Laboratory,Qingdao 266555,China;Science and Technology on Electronic Test&Measurement Laboratory,Qingdao 266555,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2023年第7期208-216,共9页
Acta Photonica Sinica
基金
Key Research and Development Program of Anhui Province of China (No. 201904a07020073)
Science and Technology Foundation of China (No. JSJL2020210A001)。
关键词
光辐射绝对测量
低温辐射计
有限元分析法
修正因子分析
Optical radiation absolute measurement
Cryogenic radiometer
Finite element analysis method
Correction factor analysis
