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.
Cite
@article{arxiv.1903.01097,
title = {Quasi-Continuous Metasurfaces for Orbital Angular Momentum Generation},
author = {Menglin L. N. Chen and Li Jun Jiang and Wei E. I. Sha},
journal= {arXiv preprint arXiv:1903.01097},
year = {2019}
}
Comments
5 pages, 8 figures