Simple Stokes polarimeter using a liquid crystal grating with ternary orientation domains
Simple Stokes polarimeter using a liquid crystal grating with ternary orientation domains
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DOI：
10.1364/ao.57.010183
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发表时间：
2018-12-10
期刊：
影响因子：
1.9
通讯作者：
Nose, Toshiaki
中科院分区：
文献类型：
--
作者：
Honma, Michinori;Takahashi, Natsuki;Nose, Toshiaki
提出了一种用于光偏振测量的具有三元取向结构域的液晶(LC)光栅。产生二维衍射性质的三元取向域是同时获取多个偏振参数的关键。实验研究了液晶分子的取向状态和偏振特性对衍射效率的影响，重点考察了其在实用斯托克斯偏振仪中的适用性。利用所提出的LC光栅作为斯托克斯偏振器进行了实验，测定了线偏振和圆偏振入射光的四个斯托克斯参数(S-0、S-1、S-2和S-3)。实验结果表明，所提出的LC光栅斯托克斯偏振仪是可行的。最后，利用测量的衍射光强度与偏振的关系，利用数值推导出的优值系数，讨论了所提出的LC光栅斯托克斯偏振器的工作性能。(C)2018年美国光学学会
We propose a liquid crystal (LC) grating with a ternary orientation domain for application to optical polarization measurements. The ternary orientation domain, which generates two-dimensional diffraction properties, is the key to simultaneous acquisition of multiple polarization parameters. The LC molecular orientation state and the polarization dependence of the diffraction efficiency were investigated experimentally, focusing on the applicability to a practical Stokes polarimeter. An experiment was conducted using the proposed LC grating as a Stokes polarimeter, and the four Stokes parameters (S-0, S-1, S-2, and S-3) were determined for linearly and circularly polarized incident light. As a result, the feasibility of the proposed LC grating Stokes polarimeter has been demonstrated experimentally. Finally, the operational performance of the proposed LC grating Stokes polarimeter is discussed using a figure of merit that is numerically derived from the measured polarization dependence of the diffracted light intensity. (C) 2018 Optical Society of America