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Generation of Switchable Singular Beams with Dynamic Metasurfaces

[Image: see text] Singular beams have attracted great attention due to their optical properties and broad applications from light manipulation to optical communications. However, there has been a lack of practical schemes with which to achieve switchable singular beams with sub-wavelength resolution...

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Autores principales: Yu, Ping, Li, Jianxiong, Li, Xin, Schütz, Gisela, Hirscher, Michael, Zhang, Shuang, Liu, Na
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6595502/
https://www.ncbi.nlm.nih.gov/pubmed/31083965
http://dx.doi.org/10.1021/acsnano.9b02425
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author Yu, Ping
Li, Jianxiong
Li, Xin
Schütz, Gisela
Hirscher, Michael
Zhang, Shuang
Liu, Na
author_facet Yu, Ping
Li, Jianxiong
Li, Xin
Schütz, Gisela
Hirscher, Michael
Zhang, Shuang
Liu, Na
author_sort Yu, Ping
collection PubMed
description [Image: see text] Singular beams have attracted great attention due to their optical properties and broad applications from light manipulation to optical communications. However, there has been a lack of practical schemes with which to achieve switchable singular beams with sub-wavelength resolution using ultrathin and flat optical devices. In this work, we demonstrate the generation of switchable vector and vortex beams utilizing dynamic metasurfaces at visible frequencies. The dynamic functionality of the metasurface pixels is enabled by the utilization of magnesium nanorods, which possess plasmonic reconfigurability upon hydrogenation and dehydrogenation. We show that switchable vector beams of different polarization states and switchable vortex beams of different topological charges can be implemented through simple hydrogenation and dehydrogenation of the same metasurfaces. Furthermore, we demonstrate a two-cascade metasurface scheme for holographic pattern switching, taking inspiration from orbital angular momentum-shift keying. Our work provides an additional degree of freedom to develop high-security optical elements for anti-counterfeiting applications.
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spelling pubmed-65955022019-07-01 Generation of Switchable Singular Beams with Dynamic Metasurfaces Yu, Ping Li, Jianxiong Li, Xin Schütz, Gisela Hirscher, Michael Zhang, Shuang Liu, Na ACS Nano [Image: see text] Singular beams have attracted great attention due to their optical properties and broad applications from light manipulation to optical communications. However, there has been a lack of practical schemes with which to achieve switchable singular beams with sub-wavelength resolution using ultrathin and flat optical devices. In this work, we demonstrate the generation of switchable vector and vortex beams utilizing dynamic metasurfaces at visible frequencies. The dynamic functionality of the metasurface pixels is enabled by the utilization of magnesium nanorods, which possess plasmonic reconfigurability upon hydrogenation and dehydrogenation. We show that switchable vector beams of different polarization states and switchable vortex beams of different topological charges can be implemented through simple hydrogenation and dehydrogenation of the same metasurfaces. Furthermore, we demonstrate a two-cascade metasurface scheme for holographic pattern switching, taking inspiration from orbital angular momentum-shift keying. Our work provides an additional degree of freedom to develop high-security optical elements for anti-counterfeiting applications. American Chemical Society 2019-05-14 2019-06-25 /pmc/articles/PMC6595502/ /pubmed/31083965 http://dx.doi.org/10.1021/acsnano.9b02425 Text en Copyright © 2019 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Yu, Ping
Li, Jianxiong
Li, Xin
Schütz, Gisela
Hirscher, Michael
Zhang, Shuang
Liu, Na
Generation of Switchable Singular Beams with Dynamic Metasurfaces
title Generation of Switchable Singular Beams with Dynamic Metasurfaces
title_full Generation of Switchable Singular Beams with Dynamic Metasurfaces
title_fullStr Generation of Switchable Singular Beams with Dynamic Metasurfaces
title_full_unstemmed Generation of Switchable Singular Beams with Dynamic Metasurfaces
title_short Generation of Switchable Singular Beams with Dynamic Metasurfaces
title_sort generation of switchable singular beams with dynamic metasurfaces
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6595502/
https://www.ncbi.nlm.nih.gov/pubmed/31083965
http://dx.doi.org/10.1021/acsnano.9b02425
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