Li Xiaobo, Le Teurnier Benjamin, Boffety Matthieu, Liu Tiegen, Hu Haofeng, Goudail François
Opt Express. 2020 May 11;28(10):15268-15283. doi: 10.1364/OE.390882.
We propose a general theory of simultaneous estimation of Stokes vector and instrumental autocalibration of polarization imagers. This theory is applicable to any polarization imager defined by its measurement matrix. We illustrate it on the example of retardance autocalibration in a large class of polarization imagers based on rotating retarders and polarimeters. We show that although all these architectures can yield optimal estimation precision of the Stokes vector if they are properly configured, they do not have the same autocalibration capacity and have to be specifically optimized for that purpose. These results are important to determine the best compromise between autocalibration capacity and polarimetric precision in practical applications.
我们提出了一种用于同时估计斯托克斯矢量和偏振成像仪仪器自校准的通用理论。该理论适用于由其测量矩阵定义的任何偏振成像仪。我们以基于旋转延迟器和偏振计的一大类偏振成像仪中的延迟自校准为例进行说明。我们表明，尽管如果这些架构配置得当，都可以产生斯托克斯矢量的最佳估计精度，但它们的自校准能力并不相同，必须为此进行专门优化。这些结果对于在实际应用中确定自校准能力和偏振测量精度之间的最佳折衷非常重要。
