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Strongly resonant silicon slot metasurfaces with symmetry-protected bound states in the continuum

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dc.affiliation.dptoUC3M. Departamento de Tecnología Electrónicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Displays y Aplicaciones Fotónicases
dc.contributor.authorAlgorri Genaro, José Francisco
dc.contributor.authorDell'Olio, Francesco
dc.contributor.authorRoldán-Varona, Pablo
dc.contributor.authorRodríguez Cobo, L.
dc.contributor.authorLópez Higuera, José Miguel
dc.contributor.authorSánchez Pena, José Manuel
dc.contributor.authorZografopoulos, Dimitrios
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2021-10-08T11:15:18Z
dc.date.available2021-10-08T11:15:18Z
dc.date.issued2021-03-29
dc.description.abstractIn this work, a novel all-dielectric metasurface made of arrayed circular slots etched in a silicon layer is proposed and theoretically investigated. The structure is designed to support both Mie-type multipolar resonances and symmetry-protected bound states in the continuum (BIC). Specifically, the metasurface consists of interrupted circular slots, following the paradigm of complementary split-ring resonators. This configuration allows both silicon-on-glass and free-standing metasurfaces and the arc length of the split-rings provides an extra tuning parameter. The nature of both BIC and non-BIC resonances supported by the metasurface is investigated by employing the Cartesian multipole decomposition technique. Thanks to the non-radiating nature of the quasi-BIC resonance, extremely high Q-factor responses are calculated, both by fitting the simulated transmittance spectra to an extended Fano model and by an eigenfrequency analysis. Furthermore, the effect of optical losses in silicon on quenching the achievable Q-factor values is discussed. The metasurface features a simple bulk geometry and sub-wavelength dimensions. This novel device, its high Q-factors, and strong energy confinement open new avenues of research on light-matter interactions in view of new applications in non-linear devices, biological sensors, and optical communications.en
dc.format.extent12
dc.identifier.bibliographicCitationAlgorri, J. F., Dell’Olio, F., Roldán-Varona, P., Rodríguez-Cobo, L., López-Higuera, J. M., Sánchez-Pena, J. M., & Zografopoulos, D. C. (2021). Strongly resonant silicon slot metasurfaces with symmetry-protected bound states in the continuum. Optics Express, 29(7), 10374en
dc.identifier.doihttps://doi.org/10.1364/OE.415377
dc.identifier.issn1094-4087
dc.identifier.publicationfirstpage10374
dc.identifier.publicationissue7
dc.identifier.publicationlastpage10385
dc.identifier.publicationtitleOptics Expressen
dc.identifier.publicationvolume29
dc.identifier.urihttps://hdl.handle.net/10016/33391
dc.identifier.uxxiAR/0000028324
dc.language.isoengen
dc.publisherOptical Society of Americaen
dc.relation.projectIDGobierno de España. TEC2016-77242-C3-1-Res
dc.relation.projectIDComunidad de Madrid. S2018/NMT-4326es
dc.relation.projectIDComunidad de Madrid. S2018/NMT-4326es
dc.relation.projectIDGobierno de España. PID2019-109072RB-C31es
dc.rights© 2021 Optical Society of Americaen
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/
dc.subject.ecienciaElectrónicaes
dc.subject.ecienciaInformáticaes
dc.titleStrongly resonant silicon slot metasurfaces with symmetry-protected bound states in the continuumen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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