High Efficiency Focusing and Vortex Generator Based on Polarization-Insensitive Gallium Nitride Metasurface

In this paper, two polarization-insensitive Gallium Nitride (GaN) metasurfaces based on a dynamic phase for adjusting the wavefront are proposed. Specifically, we obtained the target phase to satisfy some design conditions by changing the structural parameters at the nanoscales. Under the irradiatio...

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Detalles Bibliográficos
Autores principales: Sun, Zhitong, Xu, Bijun, Wu, Bairui, Wang, Xiaogang, Ying, Hao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541320/
https://www.ncbi.nlm.nih.gov/pubmed/34685078
http://dx.doi.org/10.3390/nano11102638
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author Sun, Zhitong
Xu, Bijun
Wu, Bairui
Wang, Xiaogang
Ying, Hao
author_facet Sun, Zhitong
Xu, Bijun
Wu, Bairui
Wang, Xiaogang
Ying, Hao
author_sort Sun, Zhitong
collection PubMed
description In this paper, two polarization-insensitive Gallium Nitride (GaN) metasurfaces based on a dynamic phase for adjusting the wavefront are proposed. Specifically, we obtained the target phase to satisfy some design conditions by changing the structural parameters at the nanoscales. Under the irradiation of linearly polarized (LP) light and circularly polarized (CP) light, respectively, one of the metasurfaces can generate a focused beam with an efficiency of 84.7%, and the other can generate a vortex beam with a maximum efficiency of 76.6%. Our designed metasurfaces will have important applications in optical communication, holographic projection, and particle capture.
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spelling pubmed-85413202021-10-24 High Efficiency Focusing and Vortex Generator Based on Polarization-Insensitive Gallium Nitride Metasurface Sun, Zhitong Xu, Bijun Wu, Bairui Wang, Xiaogang Ying, Hao Nanomaterials (Basel) Article In this paper, two polarization-insensitive Gallium Nitride (GaN) metasurfaces based on a dynamic phase for adjusting the wavefront are proposed. Specifically, we obtained the target phase to satisfy some design conditions by changing the structural parameters at the nanoscales. Under the irradiation of linearly polarized (LP) light and circularly polarized (CP) light, respectively, one of the metasurfaces can generate a focused beam with an efficiency of 84.7%, and the other can generate a vortex beam with a maximum efficiency of 76.6%. Our designed metasurfaces will have important applications in optical communication, holographic projection, and particle capture. MDPI 2021-10-07 /pmc/articles/PMC8541320/ /pubmed/34685078 http://dx.doi.org/10.3390/nano11102638 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
Sun, Zhitong
Xu, Bijun
Wu, Bairui
Wang, Xiaogang
Ying, Hao
High Efficiency Focusing and Vortex Generator Based on Polarization-Insensitive Gallium Nitride Metasurface
title High Efficiency Focusing and Vortex Generator Based on Polarization-Insensitive Gallium Nitride Metasurface
title_full High Efficiency Focusing and Vortex Generator Based on Polarization-Insensitive Gallium Nitride Metasurface
title_fullStr High Efficiency Focusing and Vortex Generator Based on Polarization-Insensitive Gallium Nitride Metasurface
title_full_unstemmed High Efficiency Focusing and Vortex Generator Based on Polarization-Insensitive Gallium Nitride Metasurface
title_short High Efficiency Focusing and Vortex Generator Based on Polarization-Insensitive Gallium Nitride Metasurface
title_sort high efficiency focusing and vortex generator based on polarization-insensitive gallium nitride metasurface
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541320/
https://www.ncbi.nlm.nih.gov/pubmed/34685078
http://dx.doi.org/10.3390/nano11102638
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