Navegando por Autor "Medeiros, F. F. de"

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Thermal radiation in quasiperiodic photonic crystals
(Elsevier, 2009) Mauriz, P. W.; Vasconcelos, Manoel Silva de; Medeiros, F. F. de; Albuquerque, Eudenilson Lins de
In this work we investigated the thermal power spectrum of the electromagnetic radiation through onedimensional stacks of alternating negative and positive refractive index layers, arranged as truncated quasiperiodic photonic structures obeying the Fibonacci (FB), Thue–Morse (TM), and double-period (DP) sequences. The thermal radiation power spectra are determined by means of a theoretical model based on a transfer matrix formalism for both normal and oblique incidence geometries, together with Kirchoff’s second law. We studied the radiation spectra by considering the case where both refractive indices of layers A and B are assumed to be a constant, as well as a more realistic case which takes into account the frequency-dependent electric permittivity and magnetic permeability m to characterize the negative refractive index n in layer B

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