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Journal articles
Isotropic broadband absorption by a macroscopic self-organized plasmonic crystal
Abstract : 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
https://hal.archives-ouvertes.fr/hal-01236792
Contributor : Gestionnaire Hal-Upmc <>
Submitted on : Wednesday, December 2, 2015 - 11:04:45 AM
Last modification on : Tuesday, October 6, 2020 - 4:30:48 PM
Contributor : Gestionnaire Hal-Upmc <>
Submitted on : Wednesday, December 2, 2015 - 11:04:45 AM
Last modification on : Tuesday, October 6, 2020 - 4:30:48 PM
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