Chinese Journal of Liquid Crystals and Displays, Volume. 38, Issue 1, 24(2023)
Generation and switching of arbitrary vector vortex beams on two hybrid-order Poincaré spheres with different orders based on liquid crystal device
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.
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Xin-yi ZHOU, Yi-de YUAN, Shi-yuan ZHANG, Li-shuang YAO, Xiang-sheng XIE, fan FAN, Shuang-chun WEN, Ya-qin ZHOU. 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, 2023, 38(1): 24
Category: Research Articles
Received: Sep. 29, 2022
Accepted: --
Published Online: Feb. 20, 2023
The Author Email: Ya-qin ZHOU (yqzhou@stu.edu.cn)