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dc.contributor.authorAraújo, C.A.A.-
dc.contributor.authorVasconcelos, Manoel Silva de-
dc.contributor.authorMauriz, Paulo Wilson-
dc.contributor.authorAlbuquerque, Eudenilson Lins de-
dc.identifier.citationARAÚJO, C.A.A.; VASCONCELOS, M.S.; MAURIZ, P.W.; ALBUQUERQUE, E.L.. Omnidirectional band gaps in quasiperiodic photonic crystals in the THz region. Optical Materials, [s.l.], v. 35, n. 1, p. 18-24, nov. 2012. Disponível em: Acesso em: 08 Set. 2020.
dc.rightsAttribution 3.0 Brazil*
dc.subjectPhotonic crystalspt_BR
dc.subjectQuasiperiodic structurespt_BR
dc.subjectOmnidirectional band gapspt_BR
dc.titleOmnidirectional band gaps in quasiperiodic photonic crystals in the THz regionpt_BR
dc.description.resumoIn this work we calculate the emittance spectra of the electromagnetic radiation normally and obliquely incident (s- and p-polarized modes) on a one-dimensional multilayer quasiperiodic photonic structure made up by layered system of positive (SiO2) and negative (LiTaO3) refractive index materials organized in a quasiperiodic (Fibonacci-like) fashion. We model the negative refractive index material by an effective medium, whose electric permittivity ϵ(ω) is characterized by a phonon-polariton frequency dependent dielectric function, while for the magnetic permeability μ(ω) we have a Drude-like frequency-dependent function. The emittance spectra are determined by means of a well known theoretical model based on Kirchoff’s second law, together with a transfer matrix formalism. Our results shows that the omnidirectional band gaps appear in the THz regime, in well defined frequency intervals independently of the electromagnetic radiation’s polarized modespt_BR
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