Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2010-05-31
Physics
Condensed Matter
Disordered Systems and Neural Networks
4 two-column pages, 3 figures
Scientific paper
Light propagation through 1D disordered structures composed of alternating layers, with random thicknesses, of air and a dispersive metamaterial is theoretically investigated. Both normal and oblique incidences are considered. By means of numerical simulations and an analytical theory, we have established that Anderson localization of light may be suppressed: (i) in the long wavelength limit, for a finite angle of incidence which depends on the parameters of the dispersive metamaterial; (ii) for isolated frequencies and for specific angles of incidence, corresponding to Brewster anomalies in both positive- and negative-refraction regimes of the dispersive metamaterial. These results suggest that Anderson localization of light could be explored to control and tune light propagation in disordered metamaterials.
Cavalcanti Solange B.
dos Santos Raimundo R.
Mogilevtsev D.
Oliveira Luiz E.
Pinheiro F. A.
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