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Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams

The manipulations of nanoscale multi-channel vector beams (VBs) by metasurfaces hold potential applications in various important fields. In this paper, the metasurface with two sets of nanoslits arranged on elliptic curves was proposed to generate the dual-channel focused vector beams (FVBs). Each s...

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Autores principales: Ren, Xiaorong, Gu, Manna, Zeng, Xiangyu, Sun, Rui, Zhang, Yuqin, Zhan, Zijun, Li, Lianmeng, Li, Dawei, Ma, Hong, Cheng, Chuanfu, Liu, Chunxiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8623403/
https://www.ncbi.nlm.nih.gov/pubmed/34835788
http://dx.doi.org/10.3390/nano11113024
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author Ren, Xiaorong
Gu, Manna
Zeng, Xiangyu
Sun, Rui
Zhang, Yuqin
Zhan, Zijun
Li, Lianmeng
Li, Dawei
Ma, Hong
Cheng, Chuanfu
Liu, Chunxiang
author_facet Ren, Xiaorong
Gu, Manna
Zeng, Xiangyu
Sun, Rui
Zhang, Yuqin
Zhan, Zijun
Li, Lianmeng
Li, Dawei
Ma, Hong
Cheng, Chuanfu
Liu, Chunxiang
author_sort Ren, Xiaorong
collection PubMed
description The manipulations of nanoscale multi-channel vector beams (VBs) by metasurfaces hold potential applications in various important fields. In this paper, the metasurface with two sets of nanoslits arranged on elliptic curves was proposed to generate the dual-channel focused vector beams (FVBs). Each set of nanoslits was composed of the in-phase and the out-of-phase groups of nanoslits to introduce the constructive interference and destructive interference of the output light field of the nanoslits, focusing the converted spin component and eliminating the incident spin component at the focal point. The two sets of nanoslits for the channels at the two focal points were interleaved on the same ellipses, and by setting their parameters independently, the FVBs in the two channels are generated under illumination of linearly polarized light, while their orders and polarization states of FVBs were controlled independently. The generation of the FVBs with the designed metasurfaces was demonstrated by the finite-difference time domain (FDTD) simulations and by the experimental verifications. The work in this paper is of great significance for the generation of miniaturized multi-channel VBs and for broadening the applications of metasurfaces.
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spelling pubmed-86234032021-11-27 Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams Ren, Xiaorong Gu, Manna Zeng, Xiangyu Sun, Rui Zhang, Yuqin Zhan, Zijun Li, Lianmeng Li, Dawei Ma, Hong Cheng, Chuanfu Liu, Chunxiang Nanomaterials (Basel) Article The manipulations of nanoscale multi-channel vector beams (VBs) by metasurfaces hold potential applications in various important fields. In this paper, the metasurface with two sets of nanoslits arranged on elliptic curves was proposed to generate the dual-channel focused vector beams (FVBs). Each set of nanoslits was composed of the in-phase and the out-of-phase groups of nanoslits to introduce the constructive interference and destructive interference of the output light field of the nanoslits, focusing the converted spin component and eliminating the incident spin component at the focal point. The two sets of nanoslits for the channels at the two focal points were interleaved on the same ellipses, and by setting their parameters independently, the FVBs in the two channels are generated under illumination of linearly polarized light, while their orders and polarization states of FVBs were controlled independently. The generation of the FVBs with the designed metasurfaces was demonstrated by the finite-difference time domain (FDTD) simulations and by the experimental verifications. The work in this paper is of great significance for the generation of miniaturized multi-channel VBs and for broadening the applications of metasurfaces. MDPI 2021-11-11 /pmc/articles/PMC8623403/ /pubmed/34835788 http://dx.doi.org/10.3390/nano11113024 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ren, Xiaorong
Gu, Manna
Zeng, Xiangyu
Sun, Rui
Zhang, Yuqin
Zhan, Zijun
Li, Lianmeng
Li, Dawei
Ma, Hong
Cheng, Chuanfu
Liu, Chunxiang
Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams
title Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams
title_full Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams
title_fullStr Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams
title_full_unstemmed Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams
title_short Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams
title_sort design of metasurface with nanoslits on elliptical curves for generation of dual-channel vector beams
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8623403/
https://www.ncbi.nlm.nih.gov/pubmed/34835788
http://dx.doi.org/10.3390/nano11113024
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