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Article Dans Une Revue Optics Express Année : 2009

Absorption of light by extremely shallow metallic gratings: metamaterial behavior

E. Popov
  • Fonction : Auteur
Stefan Enoch
Nicolas Bonod

Résumé

Extremely shallow lamellar metallic gratings are shown to totally absorb incident light inside a wide angular interval. The full absorption still holds at the homogeneization limit when the period tends toward zero. It is shown that a lamellar grating, illuminated in normal incidence and in transerve magnetic polarization with a period lower than 1/100 of the incident wavelength behaves like a dielectric with a high refractive index. The full absorption is then not due to the excitation of surface plasmon but either to Fabry-Perot resonance or Brewster effect, depending on the corrugated layer thickness.
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Dates et versions

hal-00374831 , version 1 (09-04-2009)

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  • HAL Id : hal-00374831 , version 1

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E. Popov, Stefan Enoch, Nicolas Bonod. Absorption of light by extremely shallow metallic gratings: metamaterial behavior. Optics Express, 2009, 17 (8), pp.6770-6781. ⟨hal-00374831⟩
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