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All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances

Nanostructured magnetic materials provide an efficient tool for light manipulation on sub-nanosecond and sub-micron scales, and allow for the observation of the novel effects which are fundamentally impossible in smooth films. For many cases of practical importance, it is vital to observe the magnet...

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Autores principales: Ignatyeva, Daria O., Karki, Dolendra, Voronov, Andrey A., Kozhaev, Mikhail A., Krichevsky, Denis M., Chernov, Alexander I., Levy, Miguel, Belotelov, Vladimir I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7599251/
https://www.ncbi.nlm.nih.gov/pubmed/33127921
http://dx.doi.org/10.1038/s41467-020-19310-x
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author Ignatyeva, Daria O.
Karki, Dolendra
Voronov, Andrey A.
Kozhaev, Mikhail A.
Krichevsky, Denis M.
Chernov, Alexander I.
Levy, Miguel
Belotelov, Vladimir I.
author_facet Ignatyeva, Daria O.
Karki, Dolendra
Voronov, Andrey A.
Kozhaev, Mikhail A.
Krichevsky, Denis M.
Chernov, Alexander I.
Levy, Miguel
Belotelov, Vladimir I.
author_sort Ignatyeva, Daria O.
collection PubMed
description Nanostructured magnetic materials provide an efficient tool for light manipulation on sub-nanosecond and sub-micron scales, and allow for the observation of the novel effects which are fundamentally impossible in smooth films. For many cases of practical importance, it is vital to observe the magneto-optical intensity modulation in a dual-polarization regime. However, the nanostructures reported on up to date usually utilize a transverse Kerr effect and thus provide light modulation only for p-polarized light. We present a concept of a transparent magnetic metasurface to solve this problem, and demonstrate a novel mechanism for magneto-optical modulation. A 2D array of bismuth-substituted iron-garnet nanopillars on an ultrathin iron-garnet slab forms a metasurface supporting quasi-waveguide mode excitation. In contrast to plasmonic structures, the all-dielectric magnetic metasurface is shown to exhibit much higher transparency and superior quality-factor resonances, followed by a multifold increase in light intensity modulation. The existence of a wide variety of excited mode types allows for advanced light control: transmittance of both p- and s-polarized illumination becomes sensitive to the medium magnetization, something that is fundamentally impossible in smooth magnetic films. The proposed metasurface is very promising for sensing, magnetometry and light modulation applications.
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spelling pubmed-75992512020-11-10 All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances Ignatyeva, Daria O. Karki, Dolendra Voronov, Andrey A. Kozhaev, Mikhail A. Krichevsky, Denis M. Chernov, Alexander I. Levy, Miguel Belotelov, Vladimir I. Nat Commun Article Nanostructured magnetic materials provide an efficient tool for light manipulation on sub-nanosecond and sub-micron scales, and allow for the observation of the novel effects which are fundamentally impossible in smooth films. For many cases of practical importance, it is vital to observe the magneto-optical intensity modulation in a dual-polarization regime. However, the nanostructures reported on up to date usually utilize a transverse Kerr effect and thus provide light modulation only for p-polarized light. We present a concept of a transparent magnetic metasurface to solve this problem, and demonstrate a novel mechanism for magneto-optical modulation. A 2D array of bismuth-substituted iron-garnet nanopillars on an ultrathin iron-garnet slab forms a metasurface supporting quasi-waveguide mode excitation. In contrast to plasmonic structures, the all-dielectric magnetic metasurface is shown to exhibit much higher transparency and superior quality-factor resonances, followed by a multifold increase in light intensity modulation. The existence of a wide variety of excited mode types allows for advanced light control: transmittance of both p- and s-polarized illumination becomes sensitive to the medium magnetization, something that is fundamentally impossible in smooth magnetic films. The proposed metasurface is very promising for sensing, magnetometry and light modulation applications. Nature Publishing Group UK 2020-10-30 /pmc/articles/PMC7599251/ /pubmed/33127921 http://dx.doi.org/10.1038/s41467-020-19310-x Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Ignatyeva, Daria O.
Karki, Dolendra
Voronov, Andrey A.
Kozhaev, Mikhail A.
Krichevsky, Denis M.
Chernov, Alexander I.
Levy, Miguel
Belotelov, Vladimir I.
All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances
title All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances
title_full All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances
title_fullStr All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances
title_full_unstemmed All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances
title_short All-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-Q resonances
title_sort all-dielectric magnetic metasurface for advanced light control in dual polarizations combined with high-q resonances
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7599251/
https://www.ncbi.nlm.nih.gov/pubmed/33127921
http://dx.doi.org/10.1038/s41467-020-19310-x
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