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Generalized and multiplexed q-plates emulated via an LCoS-based device
Journal of Optics ( IF 2.0 ) Pub Date : 2021-08-24 , DOI: 10.1088/2040-8986/ac19ef
M A Vergara 1, 2 , E Chironi 1 , C Iemmi 1, 2
Affiliation  

In this paper we implement a previously proposed experimental device based on a liquid crystal on silicon (LCoS) display for emulating generalized q-plates. In order to prove the feasibility of this method, we test q-plates defined by linear and nonlinear functions of both the radial and the azimuthal variables, and study their effect on uniformly polarized beams in the near and far-field regime. This gives a tool for achieving beams with hybrid states of polarization (SoPs), and alternative phase and intensity distributions. We also propose an application that takes advantage of the pixelated nature of this kind of devices for creating arbitrary superpositions of vector and vortex beams by emulating randomized combinations of two different q-plates, i.e. multiplexed q-plates. Great agreement is found between theoretical and experimental results.



中文翻译:

通过基于 LCoS 的设备模拟的广义和多路复用 q 板

在本文中,我们实现了先前提出的基于硅基液晶 (LCoS) 显示器的实验装置,用于模拟广义q板。为了证明该方法的可行性,我们测试了由径向和方位角变量的线性和非线性函数定义的q板,并研究了它们在近场和远场区域对均匀偏振光束的影响。这为获得具有混合偏振态 (SoP) 以及交替相位和强度分布的光束提供了一种工具。我们还提出了一个应用程序,该应用程序利用此类设备的像素化特性,通过模拟两个不同q 的随机组合来创建矢量和涡旋光束的任意叠加-plates,即多路复用的q- plates。在理论和实验结果之间发现了很大的一致性。

更新日期:2021-08-24
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