Polarimetry by classical ghost diffraction
Polarimetry by classical ghost diffraction
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DOI：
10.1088/2040-8978/16/5/055702
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发表时间：
2014-04
影响因子：
2.1
通讯作者：
H. Kellock;T. Setälä;A. Friberg;T. Shirai
中科院分区：
文献类型：
--
作者：
H. Kellock;T. Setälä;A. Friberg;T. Shirai
本文提出了一种利用经典鬼衍射研究双折射物体偏振特性的方法。标准的鬼衍射装置被修改为包括偏振器，用于控制光束在各个位置的偏振状态。该对象的特点是由琼斯矩阵和傅立叶变换的绝对值的各个元素进行测量。从这些测量中，可以通过迭代方法检索原始复值函数，从而得到对象的完整琼斯矩阵。我们提出了两种不同的位置的偏振器，并表明，其中之一导致更好的偏振质量，而另一个位置提供了可能性，不控制源的偏振状态进行偏振。为了简化计算，引入了有效源的概念.鬼偏振测量使得能够通过简单的强度相关测量来评估作为对象内的位置的函数的偏振特性。
We present a technique for studying the polarimetric properties of a birefringent object by means of classical ghost diffraction. The standard ghost diffraction setup is modified to include polarizers for controlling the state of polarization of the beam in various places. The object is characterized by a Jones matrix and the absolute values of the Fourier transforms of its individual elements are measured. From these measurements the original complex-valued functions can be retrieved through iterative methods resulting in the full Jones matrix of the object. We present two different placements of the polarizers and show that one of them leads to better polarimetric quality, while the other placement offers the possibility to perform polarimetry without controlling the source’s state of polarization. The concept of an effective source is introduced to simplify the calculations. Ghost polarimetry enables the assessment of polarization properties as a function of position within the object through simple intensity correlation measurements.