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dc.creatorTorres Landívar, Víctores_ES
dc.creatorPacheco-Peña, Víctores_ES
dc.creatorRodríguez Ulibarri, Pabloes_ES
dc.creatorNavarro Cía, Migueles_ES
dc.creatorBeruete Díaz, Migueles_ES
dc.creatorSorolla Ayza, Marioes_ES
dc.creatorEngheta, Naderes_ES
dc.date.accessioned2018-10-23T07:35:27Z
dc.date.available2018-10-23T07:35:27Z
dc.date.issued2013
dc.identifier.issn1094-4087 (Electronic)
dc.identifier.urihttps://hdl.handle.net/2454/31109
dc.description.abstractAn epsilon-near-zero graded-index converging lens with planar faces is proposed and analyzed. Each perfectly-electric conducting (PEC) waveguide comprising the lens operates slightly above its cut-off frequency and has the same length but different cross-sectional dimensions. This allows controlling individually the propagation constant and the normalized characteristic impedance of each waveguide for the desired phase front at the lens output while Fresnel reflection losses are minimized. A complete theoretical analysis based on the waveguide theory and Fermat’s principle is provided. This is complemented with numerical simulation results of two-dimensional and three-dimensional lenses, made of PEC and aluminum, respectively, and working in the terahertz regime, which show good agreement with the analytical work.en
dc.description.sponsorshipEffort sponsored by Spanish Government under contracts Consolider “Engineering Metamaterials” CSD2008-00066 and TEC2011-28664-C02-01. P.R.-U. is sponsored by the Government of Navarra under funding program “Formación de tecnólogos” 055/01/11. M.N.- C. is supported by the Imperial College Junior Research Fellowship. M. B. acknowledges funding by the Spanish Government under the research contract program Ramon y Cajal RYC-2011-08221. N.E. acknowledges the support from the US Office of Naval Research (ONR) Multidisciplinary University Research Initiatives (MURI) grant number N00014-10-1- 0942.en
dc.format.extent11 p.
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.publisherOptical Society of Americaen
dc.relation.ispartofOptics Express, Vol. 21, Issue 7, pp. 9156-9166 (2013)en
dc.rights© 2013 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.en
dc.subjectEpsilon-near-zero graded-index converging lensesen
dc.titleTerahertz epsilon-near-zero graded-index lensen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeArtículo / Artikuluaes
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónicaes_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko eta Elektronikoa Sailaeu
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.identifier.doi10.1364/OE.21.009156
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/6PN/TEC2011-28664en
dc.relation.publisherversionhttps://doi.org/10.1364/OE.21.009156
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
dc.type.versionVersión publicada / Argitaratu den bertsioaes
dc.contributor.funderGobierno de Navarra / Nafarroako Gobernua, 055/01/11es


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