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Generation of cylindrical vector vortex beams with high purity by using cascaded all-dielectric metasurfaces

XIAODONG ZHANG1,2,3,* , XINPENG WU1, JILI ZHANG1, YU ZHAO1, NINGTAO MA1, QIYUAN MU4

Affiliation

  1. School of Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
  2. Henan Key Laboratory of Magnetoelectronic Information Functional Materials, Zhengzhou University of Light Industy, Zhengzhou 450002, China
  3. Zhengzhou Key Laboratory of Information Optics and Photoelectric Technology, Zhengzhou University of Light Industry, Zhengzhou 450002, China
  4. Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China

Abstract

In this paper, we propose an efficient approach to generate cylindrical vector vortex beams by cascading the three all-dielectric metasurfaces. The cascaded metasurfaces are composed of 21×21 array units, operate at 1550 nm and are capable of generating the cylindrical vector vortex beams with topological charges of ±1 and polarization orders of ±1 under the incidence of circularly polarized light. Mode purity of the cylindrical vector vortex beam is 81.71% calculated by numerical simulation. Our design has characteristics of high purity, compact and easy-fabrication and may be a potential candidate in integrated optical system in future..

Keywords

Cascaded metasurfaces, Vortex beam, Vector beam.

Submitted at: April 30, 2022
Accepted at: Feb. 14, 2023

Citation

XIAODONG ZHANG, XINPENG WU, JILI ZHANG, YU ZHAO, NINGTAO MA, QIYUAN MU, Generation of cylindrical vector vortex beams with high purity by using cascaded all-dielectric metasurfaces, Journal of Optoelectronics and Advanced Materials Vol. 25, Iss. 1-2, pp. 14-23 (2023)