Quasi-continuous metasurfaces for orbital angular momentum generation

Menglin L.N. Chen; Li Jun Jiang; Wei E.I. Sha

doi:10.1109/LAWP.2019.2894772

Quasi-continuous metasurfaces for orbital angular momentum generation

Menglin L.N. Chen, Li Jun Jiang, Wei E.I. Sha

Research output: Journal article publication › Journal article › Academic research › peer-review

30 Citations (Scopus)

Abstract

A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM) generation. The metasurfaces reflect the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to RCP/LCP vortex beams carrying OAM at normal or oblique direction. Unlike conventional metasurfaces that are composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. The patterning of the metasurface is calculated through grating vectors, and no optimization of single scatterer is required. Furthermore, the distortions from local-response discontinuity of discrete scatterers are avoided. This letter provides great convenience to high-quality OAM generation.

Original language	English
Article number	8624314
Pages (from-to)	477-481
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	18
Issue number	3
DOIs	https://doi.org/10.1109/LAWP.2019.2894772
Publication status	Published - Mar 2019
Externally published	Yes

Keywords

Grating vector
Orbital angular momentum (OAM)
Quasi-continuous metasurface

ASJC Scopus subject areas

Electrical and Electronic Engineering

More information

10.1109/LAWP.2019.2894772

Cite this

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title = "Quasi-continuous metasurfaces for orbital angular momentum generation",

abstract = "A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM) generation. The metasurfaces reflect the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to RCP/LCP vortex beams carrying OAM at normal or oblique direction. Unlike conventional metasurfaces that are composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. The patterning of the metasurface is calculated through grating vectors, and no optimization of single scatterer is required. Furthermore, the distortions from local-response discontinuity of discrete scatterers are avoided. This letter provides great convenience to high-quality OAM generation.",

keywords = "Grating vector, Orbital angular momentum (OAM), Quasi-continuous metasurface",

author = "Chen, {Menglin L.N.} and Jiang, {Li Jun} and Sha, {Wei E.I.}",

note = "Funding Information: Manuscript received December 27, 2018; accepted January 19, 2019. Date of publication January 23, 2019; date of current version March 1, 2019. This work was supported in part by the Research Grants Council of Hong Kong under Grant GRF 17209918, in part by the AOARD under Grant FA2386-17-1-0010, in part by the NSFC under Grant 61271158, in part by the HKU Seed Fund under Grant 201711159228, and in part by the Hundred Talents Program of Zhejiang University under Grant 188020*194231701/208. (Corresponding author: Li Jun Jiang.) M. L. N. Chen and L. J. Jiang are with the Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong (e-mail:, menglin@connect.hku.hk; jianglj@hku.hk). Publisher Copyright: {\textcopyright} 2018 IEEE.",

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N1 - Funding Information: Manuscript received December 27, 2018; accepted January 19, 2019. Date of publication January 23, 2019; date of current version March 1, 2019. This work was supported in part by the Research Grants Council of Hong Kong under Grant GRF 17209918, in part by the AOARD under Grant FA2386-17-1-0010, in part by the NSFC under Grant 61271158, in part by the HKU Seed Fund under Grant 201711159228, and in part by the Hundred Talents Program of Zhejiang University under Grant 188020*194231701/208. (Corresponding author: Li Jun Jiang.) M. L. N. Chen and L. J. Jiang are with the Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong (e-mail:, menglin@connect.hku.hk; jianglj@hku.hk). Publisher Copyright: © 2018 IEEE.

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N2 - A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM) generation. The metasurfaces reflect the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to RCP/LCP vortex beams carrying OAM at normal or oblique direction. Unlike conventional metasurfaces that are composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. The patterning of the metasurface is calculated through grating vectors, and no optimization of single scatterer is required. Furthermore, the distortions from local-response discontinuity of discrete scatterers are avoided. This letter provides great convenience to high-quality OAM generation.

AB - A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM) generation. The metasurfaces reflect the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to RCP/LCP vortex beams carrying OAM at normal or oblique direction. Unlike conventional metasurfaces that are composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. The patterning of the metasurface is calculated through grating vectors, and no optimization of single scatterer is required. Furthermore, the distortions from local-response discontinuity of discrete scatterers are avoided. This letter provides great convenience to high-quality OAM generation.

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Quasi-continuous metasurfaces for orbital angular momentum generation

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Keywords

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