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dc.contributor.authorKim, Jongbum
dc.contributor.authorDutta, Aveek
dc.contributor.authorNaik, Gururaj V.
dc.contributor.authorGiles, Alexander J.
dc.contributor.authorBezares, Francisco J.
dc.contributor.authorEllis, Chase T.
dc.contributor.authorTischler, Joseph G.
dc.contributor.authorMahmoud, Ahmed M.
dc.contributor.authorCaglayan, Humeyra
dc.contributor.authorGlembocki, Orest J.
dc.contributor.authorKildishev, Alexander V.
dc.contributor.authorCaldwell, Joshua D.
dc.contributor.authorBoltasseva, Alexandra
dc.contributor.authorEngheta, Nader
dc.date.accessioned2020-02-05T11:17:28Z
dc.date.available2020-02-05T11:17:28Z
dc.date.issued2016en_US
dc.identifier.issn2334-2536
dc.identifier.other10.1364/OPTICA.3.000339
dc.identifier.urihttps://hdl.handle.net/20.500.12573/136
dc.descriptionOffice of Naval Research (ONR) (N00014-10-1-0942); Air Force Office of Scientific Research (AFOSR) (FA9550-14-1-0389); NRC/ASEE Postdoctoral Fellowship Naval Research Laboratory Nanoscience Institute (from ONR).en_US
dc.description.abstractRadiation patterns and the resonance wavelength of a plasmonic antenna are significantly influenced by its local environment, particularly its substrate. Here, we experimentally explore the role of dispersive substrates, such as aluminum-or gallium-doped zinc oxide in the near infrared and 4H-silicon carbide in the mid-infrared, upon Au plasmonic antennas, extending from dielectric to metal-like regimes, crossing through epsilon-near-zero (ENZ) conditions. We demonstrate that the vanishing index of refraction within this transition induces a "slowing down" of the rate of spectral shift for the antenna resonance frequency, resulting in an eventual "pinning" of the resonance near the ENZ frequency. This condition corresponds to a strong backward emission with near-constant phase. By comparing heavily doped semiconductors and undoped, polar dielectric substrates with ENZ conditions in the near- and mid-infrared, respectively, we also demonstrate the generality of the phenomenon using both surface plasmon and phonon polaritons, respectively. Furthermore, we also show that the redirected antenna radiation induces a Fano-like interference and an apparent stimulation of optic phonons within SiC. (C) 2016 Optical Society of Americaen_US
dc.description.sponsorshipOffice of Naval Research N00014-10-1-0942 United States Department of Defense Air Force Office of Scientific Research (AFOSR) FA9550-14-1-0389 NRC/ASEE Postdoctoral Fellowship Naval Research Laboratory Nanoscience Institute (ONR)en_US
dc.language.isoengen_US
dc.publisherOPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USAen_US
dc.relation.ispartofseriesVolume: 3;
dc.relation.ispartofseriesIssue: 3;
dc.relation.ispartofseriesPages: 339-346;
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSURFACE PHONON POLARITONSen_US
dc.subjectNANOANTENNA ARRAYSen_US
dc.subjectGRAPHENE PLASMONSen_US
dc.subjectBORON-NITRIDEen_US
dc.subjectMETAMATERIALSen_US
dc.subjectLIGHTen_US
dc.subjectABSORPTIONen_US
dc.subjectINDEXen_US
dc.subjectREALIZATIONen_US
dc.subjectWAVELENGTHSen_US
dc.titleRole of epsilon-near-zero substrates in the optical response of plasmonic antennasen_US
dc.typearticleen_US
dc.contributor.departmentAGÜ, Mühendislik Fakültesi, Elektrik & Elektronik Mühendisliği Bölümüen_US
dc.contributor.institutionauthor
dc.identifier.doi10.1364/OPTICA.3.000339
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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