Generation of optical vortices using the metasurface combining dynamic and geometric phases

Haoran Lv; Yihua Bai; Jun Yao; Yuanjie Yang

doi:10.1117/12.2604457

13 December 2021 Generation of optical vortices using the metasurface combining dynamic and geometric phases

Haoran Lv, Yihua Bai, Jun Yao, Yuanjie Yang

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Proceedings Volume 12072, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics; 1207205 (2021) https://doi.org/10.1117/12.2604457
Event: Tenth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2021), 2021, Chengdu, China

Abstract

Hitherto, methods to generate optical vortex beams have been widely researched, ranging from mode conversion to diffractive optical elements. However, bulky-sized traditional methods are unsuitable for nanophotonic systems, metasurface has become an alternative option for generating optical vortices. In this paper, a metasurface combining dynamic and geometric phases is proposed. Under the incidence of circular polarized light, optical vortices with different topological charges can be generated simultaneously by a single metasurface. The dynamic phase makes the topological charge of the vortex light vary with distance. The intensity distribution and relative distance of the focused vortices can be manipulated with different focal length of the metasurface. This method provides a new design to generate different vortices in a single device and has potential applications in particle capture and integrated optical systems.

Citation Download Citation

Haoran Lv, Yihua Bai, Jun Yao, and Yuanjie Yang "Generation of optical vortices using the metasurface combining dynamic and geometric phases", Proc. SPIE 12072, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics, 1207205 (13 December 2021); https://doi.org/10.1117/12.2604457

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KEYWORDS

Optical vortices

Optical components

Wave propagation

Wavefronts

Gold

Integrated optics

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