Planar holographic metasurfaces for terahertz focusing

Scientists and laymen alike have always been fascinated by the ability of lenses and mirrors to control light. Now, with the advent of metamaterials and their two-dimensional counterpart metasurfaces, such components can be miniaturized and designed with additional functionalities, holding promise f...

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Autores: Kuznetsov, Sergei A., Astafev, Mikhail A., Beruete Díaz, Miguel, Navarro Cía, Miguel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/30722
Acceso en línea:https://hdl.handle.net/2454/30722
Access Level:acceso abierto
Palabra clave:Terahertz radiation
Planar holographic metasurfaces
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spelling Planar holographic metasurfaces for terahertz focusingKuznetsov, Sergei A.Astafev, Mikhail A.Beruete Díaz, MiguelNavarro Cía, MiguelTerahertz radiationPlanar holographic metasurfacesScientists and laymen alike have always been fascinated by the ability of lenses and mirrors to control light. Now, with the advent of metamaterials and their two-dimensional counterpart metasurfaces, such components can be miniaturized and designed with additional functionalities, holding promise for system integration. To demonstrate this potential, here ultrathin reflection metasurfaces (also called metamirrors) designed for focusing terahertz radiation into a single spot and four spaced spots are proposed and experimentally investigated at the frequency of 0.35 THz. Each metasurface is designed using a computer-generated spatial distribution of the reflection phase. The phase variation within 360 deg is achieved via a topological morphing of the metasurface pattern from metallic patches to U-shaped and split-ring resonator elements, whose spectral response is derived from full-wave electromagnetic simulations. The proposed approach demonstrates a high-performance solution for creating low-cost and lightweight beam-shaping and beam-focusing devices for the terahertz band.This work was supported by the Ministry of Education and Science of the Russian Federation under the State Assignment Contract #3002 (implementation of the Gerchberg-Saxton iterative algorithm and experimental testing), the Russian Science Foundation under the Project 14-12-01037 (full-wave electromagnetic simulations), and the Spanish Government under contracts Consolider “Engineering Metamaterials” CSD2008-00066, and TEC2011-28664-C01. M. Beruete acknowledges funding by the Spanish Government under the research contract program Ramón y Cajal RYC-2011-08221. M. N.-C. was supported by Imperial College London through a Junior Research Fellowship.Springer NatureIngeniería Eléctrica y ElectrónicaIngeniaritza Elektrikoa eta Elektronikoa2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/30722reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/MICINN//TEC2011-28664-C02-01This work is licensed under a Creative Commons Attribution-NonCommercial- ShareAlike 4.0 International License.The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material.https://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/307222026-06-17T12:41:47Z
dc.title.none.fl_str_mv Planar holographic metasurfaces for terahertz focusing
title Planar holographic metasurfaces for terahertz focusing
spellingShingle Planar holographic metasurfaces for terahertz focusing
Kuznetsov, Sergei A.
Terahertz radiation
Planar holographic metasurfaces
title_short Planar holographic metasurfaces for terahertz focusing
title_full Planar holographic metasurfaces for terahertz focusing
title_fullStr Planar holographic metasurfaces for terahertz focusing
title_full_unstemmed Planar holographic metasurfaces for terahertz focusing
title_sort Planar holographic metasurfaces for terahertz focusing
dc.creator.none.fl_str_mv Kuznetsov, Sergei A.
Astafev, Mikhail A.
Beruete Díaz, Miguel
Navarro Cía, Miguel
author Kuznetsov, Sergei A.
author_facet Kuznetsov, Sergei A.
Astafev, Mikhail A.
Beruete Díaz, Miguel
Navarro Cía, Miguel
author_role author
author2 Astafev, Mikhail A.
Beruete Díaz, Miguel
Navarro Cía, Miguel
author2_role author
author
author
dc.contributor.none.fl_str_mv Ingeniería Eléctrica y Electrónica
Ingeniaritza Elektrikoa eta Elektronikoa
dc.subject.none.fl_str_mv Terahertz radiation
Planar holographic metasurfaces
topic Terahertz radiation
Planar holographic metasurfaces
description Scientists and laymen alike have always been fascinated by the ability of lenses and mirrors to control light. Now, with the advent of metamaterials and their two-dimensional counterpart metasurfaces, such components can be miniaturized and designed with additional functionalities, holding promise for system integration. To demonstrate this potential, here ultrathin reflection metasurfaces (also called metamirrors) designed for focusing terahertz radiation into a single spot and four spaced spots are proposed and experimentally investigated at the frequency of 0.35 THz. Each metasurface is designed using a computer-generated spatial distribution of the reflection phase. The phase variation within 360 deg is achieved via a topological morphing of the metasurface pattern from metallic patches to U-shaped and split-ring resonator elements, whose spectral response is derived from full-wave electromagnetic simulations. The proposed approach demonstrates a high-performance solution for creating low-cost and lightweight beam-shaping and beam-focusing devices for the terahertz band.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/30722
url https://hdl.handle.net/2454/30722
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN//TEC2011-28664-C02-01
dc.rights.none.fl_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
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instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
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