Isotropic broadband absorption by a macroscopic self-organized plasmonic crystal - Archive ouverte HAL
Article Dans Une Revue Optics Express Année : 2011

Isotropic broadband absorption by a macroscopic self-organized plasmonic crystal

Fangfang Wen
  • Fonction : Auteur
Julien Laverdant
Laurent Coolen
Catherine Schwob
  • Fonction : Auteur
  • PersonId : 857350
  • IdRef : 176303456
Agnès Maître
  • Fonction : Auteur
  • PersonId : 870939

Résumé

We describe the plasmonic properties of a two-dimensional periodic metallic grating of macroscopic size obtained by gold deposition on a self-assembled silica opal. Structural characterization shows a transition from microscopic order to isotropy at macroscopic scale. Optical reflection spectra exhibit a dip of almost complete absorption due to coupling to surface-plasmon-polaritons (SPP). This is explained by theoretical calculations introducing a density of coupled SPP modes. We demonstrate, at a given incidence angle, a broad continuum of coupled wavelengths over the visible spectrum. This opens new possibilities in fields where light-plasmon coupling is required over a broad range of wavelengths and incidence orientations. (C) 2011 Optical Society of America

Dates et versions

hal-01236792 , version 1 (02-12-2015)

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Hugo Frederich, Fangfang Wen, Julien Laverdant, Laurent Coolen, Catherine Schwob, et al.. Isotropic broadband absorption by a macroscopic self-organized plasmonic crystal. Optics Express, 2011, 19 (24), pp.24424-24433. ⟨10.1364/OE.19.024424⟩. ⟨hal-01236792⟩
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