Asymmetric transmission in prisms using structures and materials with isotropic-type dispersion

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buir.contributor.authorÖzbay, Ekmel
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage24132en_US
dc.citation.issueNumber19en_US
dc.citation.spage24120en_US
dc.citation.volumeNumber23en_US
dc.contributor.authorGundogdu, F. T.en_US
dc.contributor.authorSerebryannikov, A. E.en_US
dc.contributor.authorCakmak, A. O.en_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.date.accessioned2016-02-08T10:30:55Z
dc.date.available2016-02-08T10:30:55Z
dc.date.issued2015en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractIt is demonstrated that strong asymmetry in transmission can be obtained at the Gaussian beam illumination for a single prism based on a photonic crystal (PhC) with isotropic-type dispersion, as well as for its analog made of a homogeneous material. Asymmetric transmission can be realized with the aid of refraction at a proper orientation of the interfaces and wedges of the prism, whereas neither contribution of higher diffraction orders nor anisotropic-type dispersion is required. Furthermore, incidence toward a prism wedge can be used for one of two opposite directions in order to obtain asymmetry. Thus, asymmetric transmission is a general property of the prism configurations, which can be obtained by using simple geometries and quite conventional materials. The obtained results show that strong asymmetry can be achieved in PhC prisms with (nearly) circular shape of equifrequency dispersion contours, in both cases associated with the index of refraction 0 < n < 1 and n > 1. For the comparison purposes, results are also presented for solid uniform nonmagnetic prisms made of a material with the same value of n. It is shown in zero-loss approximation that the PhC prism and the ultralow-index material prism ( 0 < n < 1) can replace each other in some cases without affecting the scenario of asymmetric transmission. Moreover, the PhC prism and the solid dielectric prism can show the same scenario at n > 1. Possible contributions of scattering on the individual rods and diffraction on the wedge to the resulting mechanism are discussed. Analogs of unidirectional splitting and unidirectional deflection regimes, which are known from the studies of PhC gratings, are obtained in PhC prisms and solid uniform prisms, i.e. without higher diffraction orders. ©2015 Optical Society of America.en_US
dc.identifier.doi10.1364/OE.23.024120en_US
dc.identifier.issn1094-4087
dc.identifier.urihttp://hdl.handle.net/11693/24547
dc.language.isoEnglishen_US
dc.publisherOptical Society of Americaen_US
dc.relation.isversionofhttps://doi.org/10.1364/OE.23.024120en_US
dc.source.titleOptics Expressen_US
dc.subjectDielectric materialsen_US
dc.subjectDiffractionen_US
dc.subjectGaussian beamsen_US
dc.subjectPrismsen_US
dc.subjectRefractionen_US
dc.subjectRefractive indexen_US
dc.subjectAsymmetric transmissionsen_US
dc.subjectConventional materialsen_US
dc.subjectGaussian beam illuminationen_US
dc.subjectHigher diffraction orderen_US
dc.subjectHomogeneous materialsen_US
dc.subjectIndex of refractionen_US
dc.subjectSimple geometriesen_US
dc.subjectSolid dielectricen_US
dc.subjectDispersionsen_US
dc.titleAsymmetric transmission in prisms using structures and materials with isotropic-type dispersionen_US
dc.typeArticleen_US
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