On the design of random metasurface based devices

Abstract Metasurfaces are generally designed by placing scatterers in periodic or pseudo-periodic grids. We propose and discuss design rules for functional metasurfaces with randomly placed anisotropic elements that randomly sample a well-defined phase function. By analyzing the focusing performance...

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Autores principales:	Matthieu Dupré, Liyi Hsu, Boubacar Kanté
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/730973d45fc24e81b845c7f46ef131a4
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spelling	oai:doaj.org-article:730973d45fc24e81b845c7f46ef131a42021-12-02T11:41:26ZOn the design of random metasurface based devices10.1038/s41598-018-25488-42045-2322https://doaj.org/article/730973d45fc24e81b845c7f46ef131a42018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25488-4https://doaj.org/toc/2045-2322Abstract Metasurfaces are generally designed by placing scatterers in periodic or pseudo-periodic grids. We propose and discuss design rules for functional metasurfaces with randomly placed anisotropic elements that randomly sample a well-defined phase function. By analyzing the focusing performance of random metasurface lenses as a function of their density and the density of the phase-maps used to design them, we find that the performance of 1D metasurfaces is mostly governed by their density while 2D metasurfaces strongly depend on both the density and the near-field coupling configuration of the surface. The proposed approach is used to design all-polarization random metalenses at near infrared frequencies. Challenges, as well as opportunities of random metasurfaces compared to periodic ones are discussed. Our results pave the way to new approaches in the design of nanophotonic structures and devices from lenses to solar energy concentrators.Matthieu DupréLiyi HsuBoubacar KantéNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Matthieu Dupré Liyi Hsu Boubacar Kanté On the design of random metasurface based devices
description	Abstract Metasurfaces are generally designed by placing scatterers in periodic or pseudo-periodic grids. We propose and discuss design rules for functional metasurfaces with randomly placed anisotropic elements that randomly sample a well-defined phase function. By analyzing the focusing performance of random metasurface lenses as a function of their density and the density of the phase-maps used to design them, we find that the performance of 1D metasurfaces is mostly governed by their density while 2D metasurfaces strongly depend on both the density and the near-field coupling configuration of the surface. The proposed approach is used to design all-polarization random metalenses at near infrared frequencies. Challenges, as well as opportunities of random metasurfaces compared to periodic ones are discussed. Our results pave the way to new approaches in the design of nanophotonic structures and devices from lenses to solar energy concentrators.
format	article
author	Matthieu Dupré Liyi Hsu Boubacar Kanté
author_facet	Matthieu Dupré Liyi Hsu Boubacar Kanté
author_sort	Matthieu Dupré
title	On the design of random metasurface based devices
title_short	On the design of random metasurface based devices
title_full	On the design of random metasurface based devices
title_fullStr	On the design of random metasurface based devices
title_full_unstemmed	On the design of random metasurface based devices
title_sort	on the design of random metasurface based devices
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/730973d45fc24e81b845c7f46ef131a4
work_keys_str_mv	AT matthieudupre onthedesignofrandommetasurfacebaseddevices AT liyihsu onthedesignofrandommetasurfacebaseddevices AT boubacarkante onthedesignofrandommetasurfacebaseddevices
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On the design of random metasurface based devices

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