Flexible and Independent Control of Asymmetric Vortex Beams Based on Spin Multiplexing all Dielectric Metasurface

Vortex beams carrying orbital angular momentum have important applications in optical communication, particle manipulation and quantum information. Vortex beams have multiplexed communication capabilities. Here, at the terahertz band, we propose a spin-multiplexed all-dielectric metasurface that com...

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Bibliographic Details
Published inJournal of lightwave technology Vol. 41; no. 23; pp. 7098 - 7104
Main Authors Wang, Qingyu, Li, Chenxia, Fang, Bo, Ke, Lan, Lu, Jianxun, Ma, Xiaoli, Hong, Zhi, Jing, Xufeng
Format Journal Article
LanguageEnglish
Published New York IEEE 01.12.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Angular momentum
Asymmetry
Circular polarization
Coding
Data communication
Deflection
Electron beams
Integrated optics
Laser beams
Low-dimension (1d/2d) materials
metasurface
Metasurfaces
Micromanipulation
Multiplexing
Optical communication
Optical fiber communication
Optical polarization
Optical propagation
Optical refraction
Optical vortices
Particle beams
Polarized light
Quantum phenomena
surface and interfaces
Terahertz frequencies
transmissive
vortex beam article classification: Optics/optical applications
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Summary:Vortex beams carrying orbital angular momentum have important applications in optical communication, particle manipulation and quantum information. Vortex beams have multiplexed communication capabilities. Here, at the terahertz band, we propose a spin-multiplexed all-dielectric metasurface that combines vortex phase and encoding sequences. The metasurface can generate asymmetric vortex light with different topological charges under the condition of orthogonal circularly polarized light. Moreover, the flexible manipulation of the deflection angle of the vortex beam can be realized by changing the coding sequence. Meanwhile, the superposition of multifunctional coding sequences can also generate vortex beams with different states. Additionally, the focusing properties of the spin-multiplexed deflected vortex beam were analyzed. This work provides a new method for micro-nano integrated optics to generate deflected vortex light, which can be applied in data communication, micro-manipulation and other fields.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2023.3238389