Generation and switching of arbitrary vector vortex beams on two hybrid-order Poincaré spheres with different orders based on liquid crystal device

ZHOU Xin-yi; YUAN Yi-de; ZHANG Shi-yuan; YAO Li-shuang; XIE Xiang-sheng; FAN fan; WEN Shuang-chun; ZHOU Ya-qin

doi:10.37188/CJLCD.2022-0319

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Generation and switching of arbitrary vector vortex beams on two hybrid-order Poincaré spheres with different orders based on liquid crystal device

Liquid Crystal Optics | 更新时间：2023-03-15

- Generation and switching of arbitrary vector vortex beams on two hybrid-order Poincaré spheres with different orders based on liquid crystal device
- Chinese Journal of Liquid Crystals and Displays Vol. 38, Issue 1, Pages: 24-31(2023)
- 作者机构：
  
  1.汕头大学理学院，广东汕头 515063
  2.湖南大学物理与微电子科学学院，湖南长沙 410082
- 作者简介：
- 基金信息：
  
  Starting Research Fund from the Shantou University(NTF21051)
- DOI：10.37188/CJLCD.2022-0319
  CLC：
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ZHOU Xin-yi, YUAN Yi-de, ZHANG Shi-yuan, et al. Generation and switching of arbitrary vector vortex beams on two hybrid-order Poincaré spheres with different orders based on liquid crystal device. [J]. Chinese Journal of Liquid Crystals and Displays 38(1):24-31(2023)
DOI：

ZHOU Xin-yi, YUAN Yi-de, ZHANG Shi-yuan, et al. Generation and switching of arbitrary vector vortex beams on two hybrid-order Poincaré spheres with different orders based on liquid crystal device. [J]. Chinese Journal of Liquid Crystals and Displays 38(1):24-31(2023) DOI： 10.37188/CJLCD.2022-0319.

摘要

通常用混合阶庞加莱球的方法描述任意矢量涡旋光束，该方法可以使其偏振与相位演化的物理过程变得更加直观。目前，人们常用空间光调制器、超表面与螺旋相位板的组合、激光谐振腔等来产生矢量涡旋光束。然而，这些方法所产生的光束通常只限于特定的偏振态，且具有低损伤阈值、低转换效率和大结构尺寸等缺点，并且这些方法通常只能实现同一混合阶庞加莱球上的适量涡旋光束的产生与切换。本文提出了一种利用电控可调液晶q板和波片通过纯电控手段来实现两个不同阶混合阶庞加莱球上任意矢量涡旋光束的随意产生与切换。通过理论和实验对其结果进行验证，与预期仿真结果基本保持一致。此方法具有良好的电可控性、集成性好、转换效率高等优点，并且可以为结构化光束的应用提供基本的光学系统支持。

Abstract

Hybrid-order Poincaré Sphere is always used to describe arbitrary vector vortex beams and it makes the physical process of their polarization and phase evolution more intuitive. The vector vortex beam can be generated by using spatial light modulator， laser resonator and the combination of metasurface and spiral phase plate. However， the vector vortex beams generated by these methods are usually limited to specific polarization states， and have disadvantages such as low damage threshold， low conversion efficiency， and large structure size. Moreover， these methods can only generate the vector vortex beam on a specific hyrid-order Poincaré sphere. In this paper， we present a method to generate arbitrary vector vortex beam on two hyrid-order Poincaré spheres of different orders using two electronically controlled adjustable liquid crystal q-plates and a wave plate. The results were verified by theory and experiment. The generated vector vortex beam is also verified， which is largely consistent with the predictions. This method has the advantages of good electrical controllability， good integration and high conversion efficiency. This scheme can provide basic optical system support for the application of structured beams.

关键词

混合阶庞加莱球矢量涡旋光束液晶结构化光取向器件

Keywords

mixed-order Poincaré spherevector vortex beamliquid crystal photopatterned technology

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