Epsilon-near-zero metalenses operating in the visible
| dc.contributor.author | Pacheco-Peña, Víctor | |
| dc.contributor.author | Navarro Cía, Miguel | |
| dc.contributor.author | Beruete Díaz, Miguel | |
| dc.contributor.department | Ingeniería Eléctrica y Electrónica | es_ES |
| dc.contributor.department | Ingeniaritza Elektrikoa eta Elektronikoa | eu |
| dc.date.accessioned | 2016-01-22T09:01:05Z | |
| dc.date.available | 2018-06-01T23:00:09Z | |
| dc.date.issued | 2016 | |
| dc.description.abstract | Several converging lenses working in the permittivity near to zero (ENZ) regime at optical frequencies are designed using an array of metal-dielectric-metal plasmonic waveguides. These plasmonic waveguides show a dispersive nature that enable to mimic an effective ENZ medium when using the fast wave transverse electric (TE1) mode near its cut-off wavelength. By arranging multiple plasmonic waveguides with the correct engineered dimensions, several metalenses, including graded index (GRIN) ones, and diffractive optical elements (i.e., zoned metalenses) are proposed. The metalenses are designed at l0 = 474.9nm (f = 631.67THz) with a focal length of 10.75l0. Numerical results demonstrate that the best performance is obtained for the case of the GRIN metalens in terms of the focal position, transversal resolution and thickness, reducing its volume up to ∼52.3% with respect to the smooth-profiled plano-concave metalens. | en |
| dc.description.sponsorship | This work was supported by the Spanish Ministerio de Economía y Competitividad under contract TEC2014-51902-C2-2-R. V.P.-P. is sponsored by Spanish Ministerio de Educación, Cultura y Deporte under grant FPU AP-2012-3796. M. N.-C. is supported by the Birmingham Fellowship. M.B. is sponsored by the Spanish Government via RYC-2011-08221. | en |
| dc.embargo.lift | 2018-06-01 | |
| dc.embargo.terms | 2018-06-01 | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | 10.1016/j.optlastec.2016.01.009 | |
| dc.identifier.issn | 0030-3992 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/19928 | |
| dc.language.iso | eng | en |
| dc.publisher | Elsevier | en |
| dc.relation.ispartof | Optics & Laser Technology 80 (2016) 162–168 | en |
| dc.relation.projectID | info:eu-repo/grantAgreement/MINECO//TEC2014-51902-C2-2-R/ES/ | |
| dc.relation.publisherversion | https://dx.doi.org/10.1016/j.optlastec.2016.01.009 | |
| dc.rights | © 2016 Elsevier Ltd. The manuscript version is made available under the CC BY-NC-ND 4.0 license. | en |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | ENZ | en |
| dc.subject | Optical focusing | en |
| dc.subject | Focusing | en |
| dc.subject | Metamaterials | en |
| dc.subject | Lenses | en |
| dc.title | Epsilon-near-zero metalenses operating in the visible | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/acceptedVersion | |
| dspace.entity.type | Publication | |
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