Full utilization of semi-Dirac cones in photonics

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dc.contributor.authorYasa, Utku G.ko
dc.contributor.authorTurduev, Mirbekko
dc.contributor.authorGiden, Ibrahim H.ko
dc.contributor.authorKurt, Hamzako
dc.date.accessioned2021-04-27T01:30:24Z-
dc.date.available2021-04-27T01:30:24Z-
dc.date.created2021-04-27-
dc.date.created2021-04-27-
dc.date.created2021-04-27-
dc.date.issued2018-05-
dc.identifier.citationPHYSICAL REVIEW B, v.97, no.19-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10203/282622-
dc.description.abstractIn this study, realization and applications of anisotropic zero-refractive-index materials are proposed by exposing the unit cells of photonic crystals that exhibit Dirac-like cone dispersion to rotational symmetry reduction. Accidental degeneracy of two Bloch modes in the Brillouin zone center of two-dimensional C-2-symmetric photonic crystals gives rise to the semi-Dirac cone dispersion. The proposed C-2-symmetric photonic crystals behave as epsilon-and-mu-near-zero materials (epsilon(eff) approximate to 0,mu(eff) approximate to 0) along one propagation direction, but behave as epsilon-near-zero material (epsilon(eff) approximate to 0, mu(eff )not equal 0) for the perpendicular direction at semi--Dirac frequency. By extracting the effective medium parameters of the proposed C-4- and C-2-symmetric periodic media that exhibit Dirac-like and semi-Dirac cone dispersions, intrinsic differences between isotropic and anisotropic materials are investigated. Furthermore, advantages of utilizing semi-Dirac cone materials instead of Dirac-like cone materials in photonic applications are demonstrated in both frequency and time domains. By using anisotropic transmission behavior of the semi--Dirac materials, photonic application concepts such as beam deflectors, beam splitters, and light focusing are proposed. Furthermore, to the best of our knowledge, semi--Dirac cone dispersion is also experimentally demonstrated for the first time by including negative, zero, and positive refraction states of the given material.-
dc.languageEnglish-
dc.publisherAMER PHYSICAL SOC-
dc.titleFull utilization of semi-Dirac cones in photonics-
dc.typeArticle-
dc.identifier.wosid000433007600002-
dc.identifier.scopusid2-s2.0-85047214319-
dc.type.rimsART-
dc.citation.volume97-
dc.citation.issue19-
dc.citation.publicationnamePHYSICAL REVIEW B-
dc.identifier.doi10.1103/PhysRevB.97.195131-
dc.contributor.localauthorKurt, Hamza-
dc.contributor.nonIdAuthorYasa, Utku G.-
dc.contributor.nonIdAuthorTurduev, Mirbek-
dc.contributor.nonIdAuthorGiden, Ibrahim H.-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlusZERO-REFRACTIVE-INDEX-
dc.subject.keywordPlusNEGATIVE REFRACTION-
dc.subject.keywordPlusCRYSTALS-
dc.subject.keywordPlusMETAMATERIAL-
dc.subject.keywordPlusREALIZATION-
dc.subject.keywordPlusEMISSION-
dc.subject.keywordPlusPOINT-
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