Non-uniformity correction of polarization response for liquid crystal modulated polarimeters

Zhang Yuxin; Zhang Bao; Hong Yongfeng; Wu Wenda; Xu Fang

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Non-uniformity correction of polarization response for liquid crystal modulated polarimeters

机译：液晶调制偏振仪的极化响应的不均匀校正

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Liquid crystal modulated polarimeters (LCMPs) are often used to detect the full polarization information of target scenes. In this study, a non-uniformity correction method based on reference source calibration for LCMP is proposed. We analyze the error sources of the polarimeter and establish a grayscale response model with non-uniformity noises. The gain and bias correction coefficient of each pixel is calculated based on the linear response property of the detector. The polarization parameters of each detection unit of the uniform light source with the same polarization state calculated by the corrected, Stokes vector are uniform. Results show that the error of the degree of linear polarization is reduced by 5.08%, and the degree of circular polarization is reduced by 19%. Therefore, the proposed method effectively improves the non-uniformity and detection accuracy of polarimeters. (C) 2019 Optical Society of America

机译：液晶调制偏振仪（LCMPS）通常用于检测目标场景的完整偏振信息。在该研究中，提出了一种基于LCMP参考源校准的非均匀性校正方法。我们分析了偏振仪的误差源，并具有非均匀性噪声的灰度响应模型。基于检测器的线性响应特性计算每个像素的增益和偏置校正系数。均匀光源的每个检测单元的偏振参数具有由校正的偏振态，Stokes向量计算的相同偏振状态是均匀的。结果表明，线性极化程度的误差减少了5.08％，圆极化程度降低了19％。因此，所提出的方法有效地提高了偏振仪的不均匀性和检测精度。（c）2019年光学学会

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《Applied optics》 |2019年第32期|共10页
作者
Zhang Yuxin; Zhang Bao; Hong Yongfeng; Wu Wenda; Xu Fang;
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Chinese Acad Sci Changchun Inst Opt Fine Mech &

Phys Changchun 130033 Jilin Peoples R China;

Chinese Acad Sci Changchun Inst Opt Fine Mech &

Phys Changchun 130033 Jilin Peoples R China;

Chinese Acad Sci Changchun Inst Opt Fine Mech &

Phys Changchun 130033 Jilin Peoples R China;

Chinese Acad Sci Changchun Inst Opt Fine Mech &

Phys Changchun 130033 Jilin Peoples R China;

Chinese Acad Sci Changchun Inst Opt Fine Mech &

Phys Changchun 130033 Jilin Peoples R China;

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正文语种 eng
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Non-uniformity correction of polarization response for liquid crystal modulated polarimeters

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