Terahertz vortex beam generator carrying orbital angular momentum in both transmission and reflection spaces | Zendy

Lijing Yang | Zendy; Jiusheng Li | Zendy

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Terahertz vortex beam generator carrying orbital angular momentum in both transmission and reflection spaces

Author(s) -

Lijing Yang,

Jiusheng Li

Publication year - 2022

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.472577

Subject(s) - optics , terahertz radiation , angular momentum , optical vortex , reflection (computer programming) , light beam , orbital angular momentum of light , physics , total internal reflection , beam (structure) , orbital angular momentum multiplexing , generator (circuit theory) , transmission (telecommunications) , vortex , total angular momentum quantum number , telecommunications , power (physics) , computer science , thermodynamics , programming language , quantum mechanics

Vortex beam generators carrying orbital angular momentum (OAM) with both transmission and reflection modes has broad application prospects in full-space high data capacity communication and orbital angular momentum multiplexing systems. In this work, we proposed a vanadium dioxide (VO 2 ) assisted metasurface to independently produce and manipulate focused vortex transmission-reflection modes with different number of beams and focal lengths under right-handed circular polarized (RCP) wave incidence. The proposed metasurface generates the diagonal vortex beams, four vortex beams, and focused vortex beam for transmission mode at 1.26THz and reflection mode at 1.06THz by changing phase state of the VO 2 . Our work may find many potential applications in future high data capacity information multiplexing communication systems.

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