Measurement of internal stray radiation of a thermal infrared spectrometer based on temperature variation

Peng Jun; Yue Xu; Du Hao-Ting; Yin Zi-Hao; Chai Meng-Yang; Sun De-Xin; Liu Yin-Nian

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Measurement of internal stray radiation of a thermal infrared spectrometer based on temperature variation

机译：基于温度变化的热红外光谱仪的内部杂散辐射测量

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The level of internal stray radiation is an important criterion to evaluate the performance of a thermal infrared spectrometer. In this study, a novel method is proposed and evaluated to measure the internal stray radiation of a thermal infrared spectrometer based on temperature variation. The proposed method was used to measure the internal stray radiation values of an existing instrument. First, two output gray value curves were constructed for a single spectral channel in a cryogenic detector at two different spectrometer temperatures based on radiometric calibration measurements. Subsequently, the gray value and radiation flux of the internal stray radiation of the spectrometer were calculated. In addition, the internal stray radiation data measured at different spectral channels and different integration times were used to verify and evaluate the proposed method. Results show that the proposed method is valid, and the standard deviations of the various internal radiation values of the tested spectral channels and the various integration times are 3.47% and 1.46%, respectively. The proposed method is adaptable, flexible, and efficient. (C) 2019 Optical Society of America

机译：内部流浪辐射的水平是评估热红外光谱仪的性能的重要标准。在该研究中，提出了一种新方法，并评估了基于温度变化测量热红外光谱仪的内部杂散辐射。所提出的方法用于测量现有仪器的内部杂散辐射值。首先，在基于辐射校准测量的两个不同的光谱仪温度下，在低温检测器中为单个光谱通道构建两个输出灰度值曲线。随后，计算光谱仪的内部杂散辐射的灰度值和辐射通量。另外，在不同光谱通道和不同积分时间下测量的内部杂散辐射数据用于验证和评估所提出的方法。结果表明，该方法有效，测试光谱通道的各种内部辐射值和各种整合时间的标准偏差分别为3.47％和1.46％。所提出的方法适用，灵活，有效。（c）2019年光学学会

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《Applied optics》 |2019年第31期|共8页
作者
Peng Jun; Yue Xu; Du Hao-Ting; Yin Zi-Hao; Chai Meng-Yang; Sun De-Xin; Liu Yin-Nian;
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Chinese Acad Sci Shanghai Inst Tech Phys Key Lab Infrared Syst Detect &

Imaging Technol Shanghai 200083 Peoples R China;

Chinese Acad Sci Shanghai Inst Tech Phys Key Lab Infrared Syst Detect &

Imaging Technol Shanghai 200083 Peoples R China;

Chinese Acad Sci Shanghai Inst Tech Phys Key Lab Infrared Syst Detect &

Imaging Technol Shanghai 200083 Peoples R China;

Chinese Acad Sci Shanghai Inst Tech Phys Key Lab Infrared Syst Detect &

Imaging Technol Shanghai 200083 Peoples R China;

Chinese Acad Sci Shanghai Inst Tech Phys Key Lab Infrared Syst Detect &

Imaging Technol Shanghai 200083 Peoples R China;

Chinese Acad Sci Shanghai Inst Tech Phys Key Lab Infrared Syst Detect &

Imaging Technol Shanghai 200083 Peoples R China;

Chinese Acad Sci Shanghai Inst Tech Phys Key Lab Infrared Syst Detect &

Imaging Technol Shanghai 200083 Peoples R China;

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Measurement of internal stray radiation of a thermal infrared spectrometer based on temperature variation

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