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Broadband Spin-Selective Wavefront Manipulations Based on Pancharatnam–Berry Coding Metasurfaces
[Image: see text] Spin-selective reflection metadevices are usually realized by using chiral metamirrors that can reflect one state of circularly polarized (CP) waves and restrain the other one. However, most of the chiral metamirrors only exhibit chirality in a narrow band, which may impede their p...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8582030/ https://www.ncbi.nlm.nih.gov/pubmed/34778673 http://dx.doi.org/10.1021/acsomega.1c04733 |
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author | Gou, Yue Ma, Hui Feng Wu, Liang Wei Wang, Zheng Xing Xu, Peng Cui, Tie Jun |
author_facet | Gou, Yue Ma, Hui Feng Wu, Liang Wei Wang, Zheng Xing Xu, Peng Cui, Tie Jun |
author_sort | Gou, Yue |
collection | PubMed |
description | [Image: see text] Spin-selective reflection metadevices are usually realized by using chiral metamirrors that can reflect one state of circularly polarized (CP) waves and restrain the other one. However, most of the chiral metamirrors only exhibit chirality in a narrow band, which may impede their potential applications. Here, we propose a Pancharatnam–Berry (PB) coding metasurface composed of the spin-decoupled elements to realize broadband spin-selective reflections with arbitrary wavefront manipulations. The spin-selective anomalous reflection is designed and measured to validate the performance of the proposed PB coding metasurface. Both simulation and experiment results show that the designated CP wave can be efficiently reflected without reversing the spin state, while at the same time, its orthogonally polarized wave is suppressed by random diffusion, in a broad band from 16 to 24 GHz. The results also reveal that the proposed PB coding metasurface has the chiral-like characteristics, even though it is composed of nonchiral meta-elements. |
format | Online Article Text |
id | pubmed-8582030 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-85820302021-11-12 Broadband Spin-Selective Wavefront Manipulations Based on Pancharatnam–Berry Coding Metasurfaces Gou, Yue Ma, Hui Feng Wu, Liang Wei Wang, Zheng Xing Xu, Peng Cui, Tie Jun ACS Omega [Image: see text] Spin-selective reflection metadevices are usually realized by using chiral metamirrors that can reflect one state of circularly polarized (CP) waves and restrain the other one. However, most of the chiral metamirrors only exhibit chirality in a narrow band, which may impede their potential applications. Here, we propose a Pancharatnam–Berry (PB) coding metasurface composed of the spin-decoupled elements to realize broadband spin-selective reflections with arbitrary wavefront manipulations. The spin-selective anomalous reflection is designed and measured to validate the performance of the proposed PB coding metasurface. Both simulation and experiment results show that the designated CP wave can be efficiently reflected without reversing the spin state, while at the same time, its orthogonally polarized wave is suppressed by random diffusion, in a broad band from 16 to 24 GHz. The results also reveal that the proposed PB coding metasurface has the chiral-like characteristics, even though it is composed of nonchiral meta-elements. American Chemical Society 2021-10-29 /pmc/articles/PMC8582030/ /pubmed/34778673 http://dx.doi.org/10.1021/acsomega.1c04733 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Gou, Yue Ma, Hui Feng Wu, Liang Wei Wang, Zheng Xing Xu, Peng Cui, Tie Jun Broadband Spin-Selective Wavefront Manipulations Based on Pancharatnam–Berry Coding Metasurfaces |
title | Broadband Spin-Selective Wavefront Manipulations Based
on Pancharatnam–Berry Coding Metasurfaces |
title_full | Broadband Spin-Selective Wavefront Manipulations Based
on Pancharatnam–Berry Coding Metasurfaces |
title_fullStr | Broadband Spin-Selective Wavefront Manipulations Based
on Pancharatnam–Berry Coding Metasurfaces |
title_full_unstemmed | Broadband Spin-Selective Wavefront Manipulations Based
on Pancharatnam–Berry Coding Metasurfaces |
title_short | Broadband Spin-Selective Wavefront Manipulations Based
on Pancharatnam–Berry Coding Metasurfaces |
title_sort | broadband spin-selective wavefront manipulations based
on pancharatnam–berry coding metasurfaces |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8582030/ https://www.ncbi.nlm.nih.gov/pubmed/34778673 http://dx.doi.org/10.1021/acsomega.1c04733 |
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