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:	Xiaorong Ren, Manna Gu, Xiangyu Zeng, Rui Sun, Yuqin Zhang, Zijun Zhan, Lianmeng Li, Dawei Li, Hong Ma, Chuanfu Cheng, Chunxiang Liu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dual-channel focused vector beams metasurfaces geometric phase propagation phase ellipse Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/5525b91316d04bcfaebd0f071ba4cec1
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id	oai:doaj.org-article:5525b91316d04bcfaebd0f071ba4cec1
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spelling	oai:doaj.org-article:5525b91316d04bcfaebd0f071ba4cec12021-11-25T18:31:48ZDesign of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams10.3390/nano111130242079-4991https://doaj.org/article/5525b91316d04bcfaebd0f071ba4cec12021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/3024https://doaj.org/toc/2079-4991The 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.Xiaorong RenManna GuXiangyu ZengRui SunYuqin ZhangZijun ZhanLianmeng LiDawei LiHong MaChuanfu ChengChunxiang LiuMDPI AGarticledual-channel focused vector beamsmetasurfacesgeometric phasepropagation phaseellipseChemistryQD1-999ENNanomaterials, Vol 11, Iss 3024, p 3024 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dual-channel focused vector beams metasurfaces geometric phase propagation phase ellipse Chemistry QD1-999
spellingShingle	dual-channel focused vector beams metasurfaces geometric phase propagation phase ellipse Chemistry QD1-999 Xiaorong Ren Manna Gu Xiangyu Zeng Rui Sun Yuqin Zhang Zijun Zhan Lianmeng Li Dawei Li Hong Ma Chuanfu Cheng Chunxiang Liu Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams
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.
format	article
author	Xiaorong Ren Manna Gu Xiangyu Zeng Rui Sun Yuqin Zhang Zijun Zhan Lianmeng Li Dawei Li Hong Ma Chuanfu Cheng Chunxiang Liu
author_facet	Xiaorong Ren Manna Gu Xiangyu Zeng Rui Sun Yuqin Zhang Zijun Zhan Lianmeng Li Dawei Li Hong Ma Chuanfu Cheng Chunxiang Liu
author_sort	Xiaorong Ren
title	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_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_sort	design of metasurface with nanoslits on elliptical curves for generation of dual-channel vector beams
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5525b91316d04bcfaebd0f071ba4cec1
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Design of Metasurface with Nanoslits on Elliptical Curves for Generation of Dual-Channel Vector Beams

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