Acta Optica Sinica, Volume. 38, Issue 9, 0901002(2018)
Measurement Method of Internal Stray Radiation in Short-Wave Infrared Channel of Atmospheric Corrector
The suppression level of internal stray radiation of atmospheric corrector in short-wave is a key indicator for its optical design and performance evaluation, especially for infrared optical systems, in which the internal stray radiation cannot be ignored. In order to measure the output of the stray radiation inside the instrument, a method based on radiation calibration is proposed. First, we obtain the linear relationship between the input and output of the instrument by controlling variables, and the model of the radiation calibration is established. Then, the background signal of the instrument at different ambient temperatures is measured, and a maximum deviation of 4.45% is found compared to theoretical values, which verifies that the calibration model is valid. The proposed method can be used to calculate the internal stray radiation correction of atmospheric corrector at different ambient temperatures and gain values, which simplifies experimental processes and evaluates the stray radiation index of the atmospheric corrector.
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Chenyu Xie, Jianjun Li, Yinlin Yuan, Qing Kang, Bingqing Zhu, Mengfan Li, Xiaobing Zheng. Measurement Method of Internal Stray Radiation in Short-Wave Infrared Channel of Atmospheric Corrector[J]. Acta Optica Sinica, 2018, 38(9): 0901002
Category: Atmospheric Optics and Oceanic Optics
Received: Dec. 29, 2017
Accepted: Apr. 9, 2018
Published Online: May. 9, 2019
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