Optical Heterodyne Polarimeter for Studying Space-and Time-dependent State of Polarization of Light
Optical Heterodyne Polarimeter for Studying Space-and Time-dependent State of Polarization of Light
复制标题
用于研究光偏振的空间和时间相关状态的光学外差旋光仪
DOI：
10.1080/09500349114551731
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发表时间：
1991
影响因子：
1.3
通讯作者：
Y. Ohtsuka
中科院分区：
文献类型：
--
作者：
K. Oka;T. Takeda;Y. Ohtsuka
摘要：本文介绍了一种利用光电探测器阵列测量光的时空偏振态的光学外差偏振仪。由于没有使用用于偏振控制的光学元件，因此偏振计的时间响应不受这些元件的影响，而基本上受限于所使用的光电探测器阵列的频率带宽。信号和本振光束进行相干光混合，在光电探测器阵列的每一个像素处产生一个脉冲光电流。本振波束的正交线极化双频分量与各自对应的椭圆极化信号波束的正交分解分量叠加。产生的热光电流为确定空间和时间相关SOP提供了重要的物理参数。解释了偏振计的工作原理，并通过实验对其进行了验证。
Abstract This paper describes an optical heterodyne polarimeter with a photodetector array by which the space- and time-dependent state of polarization (SOP) of light can be determined. Since no optical components for polarization control are used, the time response of the polarimeter is free from such components, but is basically limited to the frequency bandwidth of the photodetector array used. The signal and local oscillator beams are coherently photomixed to generate a beat photocurrent at every pixel of the photodetector array. The orthogonal linearly polarized two-frequency components of the local oscillator beam are superimposed with their respective counterpart orthogonally decomposed components of the elliptically polarized signal beam. The generated beat-photocurrent offers the significant physical parameters required for the determination of the space- and time-dependent SOP. The performance principle of the polarimeter is explained and confirmed experimentally.