We present reciprocal polarization imaging for the optical activity of chiral media in reflection geometry. The method is based on the reciprocal polar decomposition of backscattering Mueller matrices accounting for the reciprocity of light waves in forward and backward scattering paths. Anisotropic depolarization is introduced to gain sensitivity to optical activity in backscattering. Experiments with glucose solutions show that while the Lu–Chipman decomposition of the backscattering Mueller matrices produces erroneous results, reciprocal polarization imaging correctly retrieves the optical activity of chiral media. The recovered optical rotation agrees with that obtained in the forward geometry and increases linearly with the concentration and thickness of the chiral media. The potential for in vivo glucose monitoring based on optical activity sensing using reciprocal polarization imaging is then discussed.

中文翻译：

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反射光学活动的互偏振成像

我们提出了反射几何中手性介质光学活性的互易偏振成像。该方法基于反向散射穆勒矩阵的倒易极分解，考虑了前向和后向散射路径中光波的互易性。引入各向异性去偏振是为了获得对后向散射光学活动的敏感性。用葡萄糖溶液进行的实验表明，虽然反向散射穆勒矩阵的 Lu-Chipman 分解会产生错误的结果，但互易偏振成像可以正确地检索手性介质的旋光性。恢复的旋光度与正向几何中获得的旋光度一致，并且随着手性介质的浓度和厚度线性增加。然后讨论了基于使用互偏振成像的光学活动传感的体内葡萄糖监测的潜力。