Leng Yan, Huang Tongyu, Pei Haojie, Hu Zheng, Guo Bin, Liao Ran, Ma Hui
Opt Express. 2022 Oct 24;30(22):40441-40454. doi: 10.1364/OE.474360.
In this paper, we present a Mueller matrix imaging system consisting of a spatially modulated polarization light source (SMPL) and a dual division-of-focal-plane (DoFP) polarimeters as the PSA and 2D detector. The system does not contain moving parts such as a rotating stage, which leads to more robust and reliable operations for applications in hostile settings. By taking Muller matrix images at variable distances between the SMPL and the target, we examine in details errors due to different spatial distributions in angle and intensity of different polarized lights. A calibration method is proposed to reduce such errors introduced by SMPL. The performances of the new imaging technique and the calibration method are tested in Mueller matrix imaging of different samples.
在本文中，我们展示了一种穆勒矩阵成像系统，该系统由一个空间调制偏振光源（SMPL）和一个作为偏振态分析器（PSA）及二维探测器的双焦平面分割（DoFP）偏振仪组成。该系统不包含诸如旋转台之类的移动部件，这使得其在恶劣环境中的应用操作更加稳健可靠。通过在SMPL与目标之间的可变距离处采集穆勒矩阵图像，我们详细研究了由于不同偏振光在角度和强度上的不同空间分布而导致的误差。提出了一种校准方法来减少由SMPL引入的此类误差。在对不同样品的穆勒矩阵成像中测试了这种新成像技术和校准方法的性能。
