几何相位偏振法
Geometric-phase polarimetry
摘要：
本文介绍了偏振测量策略的基础上测量光的几何相位，这是从偏振态的演变，而通过光学系统的结果。所讨论的系统是由一个均匀的琼斯矩阵，根据定义，其中包含相互垂直的本征极化。我们领先的理论链接系统的琼斯矩阵参数（本征值和本征向量）与输入偏振态和几何相位。我们演示了两种干涉技术。第一种方法基于两个相互正交的偏振态的干涉图样之间的相对横向条纹位移来测量几何相位。第二种技术利用干涉条纹的可见度来确定系统的本征偏振。我们提出了这两种技术的原理验证实验。
英文摘要：
This paper describes polarimetric strategies based on measuring the light's geometric phase, which results from the evolution of the polarisation state while traversing an optical system. The system in question is described by a homogeneous Jones matrix, which by definition, contains mutually perpendicular eigenpolarisations. Our leading theory links the system's Jones matrix parameters (eigenvalues and eigenvectors) with the input polarisation state and the geometric phase. We demonstrate two interferometric techniques. The first one measures the geometric phase based on the relative lateral fringe displacement between the interference pattern of two mutually-orthogonal polarisation states. The second technique uses the visibility of the interference fringes to determine the eigenpolarisations of the system. We present proof-of-principle experiments for both techniques.
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