Omnidirectional band gaps in quasiperiodic photonic crystals in the THz region
| dc.contributor.author | Araújo, C.A.A. | |
| dc.contributor.author | Vasconcelos, Manoel Silva de | |
| dc.contributor.author | Mauriz, Paulo Wilson | |
| dc.contributor.author | Albuquerque, Eudenilson Lins de | |
| dc.date.accessioned | 2020-09-22T18:57:11Z | |
| dc.date.available | 2020-09-22T18:57:11Z | |
| dc.date.issued | 2012 | |
| dc.description.resumo | In 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 modes | pt_BR |
| dc.identifier.citation | ARAÚJO, 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: https://www.sciencedirect.com/science/article/abs/pii/S0925346712002753?via%3Dihub. Acesso em: 08 Set. 2020. http://dx.doi.org/10.1016/j.optmat.2012.06.011. | pt_BR |
| dc.identifier.doi | 10.1016/j.optmat.2012.06.011 | |
| dc.identifier.issn | 0925-3467 | |
| dc.identifier.uri | https://repositorio.ufrn.br/jspui/handle/123456789/30163 | |
| dc.language | en | pt_BR |
| dc.publisher | Elsevier | pt_BR |
| dc.rights | Attribution 3.0 Brazil | * |
| dc.rights.uri | http://creativecommons.org/licenses/by/3.0/br/ | * |
| dc.subject | Photonic crystals | pt_BR |
| dc.subject | Quasiperiodic structures | pt_BR |
| dc.subject | Metamaterials | pt_BR |
| dc.subject | Omnidirectional band gaps | pt_BR |
| dc.title | Omnidirectional band gaps in quasiperiodic photonic crystals in the THz region | pt_BR |
| dc.type | article | pt_BR |
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