Observation of cavity structures in composite metamaterials

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buir.contributor.authorÖzbay, Ekmel
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage041790-13en_US
dc.citation.spage041790-1en_US
dc.citation.volumeNumber4en_US
dc.contributor.authorCaglayan, H.en_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.date.accessioned2016-02-08T09:55:38Z
dc.date.available2016-02-08T09:55:38Z
dc.date.issued2010-07-29en_US
dc.departmentDepartment of Physicsen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractWe investigated the cavity structure by the deformation of a unit cell of a Composite Metamaterial (CMM) structure. We considered different cavity structures with different resonance frequencies and Q-factors. We observed the Q-factor of the cavity resonance as 108 for a CMM based single cavity wherein the cavity structure is a closed ring structure. We investigated the reduced photon lifetime and observed that at the cavity resonance, the effective group velocity was reduced by a factor of 20 for a CMM based single cavity compared to the electromagnetic waves propagating in free space. Since the unit cells of metamaterials are much smaller than the operation wavelength, subwavelength localization is possible within these metamaterial cavity structures. We found that the electromagnetic field is localized into a region of/8, where is the cavity resonance wavelength. Subsequently, we brought two cavities together with an intercavity distance of two metamaterial unit cells and then investigated the transmission spectrum of CMM based interacting 2-cavity system. Finally, using the tight-binding picture we observed the normalized group velocity corresponding to the coupled cavity structure.en_US
dc.identifier.doi10.1117/1.3475763en_US
dc.identifier.issn1934-2608
dc.identifier.urihttp://hdl.handle.net/11693/22109
dc.language.isoEnglishen_US
dc.publisherS P I E - International Society for Optical Engineeringen_US
dc.relation.isversionofhttp://dx.doi.org/10.1117/1.3475763en_US
dc.source.titleJournal of Nanophotonicsen_US
dc.subjectMetamaterialsen_US
dc.subjectCavityen_US
dc.subjectLocalizationen_US
dc.subjectCoupled cavityen_US
dc.titleObservation of cavity structures in composite metamaterialsen_US
dc.typeArticleen_US

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