Enhanced scattering and absorption due to the presence of a particle close to an interface

Nir Dahan (1) , Jean-Jacques Greffet (1)

1 Laboratoire Charles Fabry / Naphel

We study the influence of the presence of an interface on the scattering by a Rayleigh scatterer. The influence of an interface on the spontaneous emission has been known for many years. Here, we study the influence on the extinction cross-section and absorption cross-section. We provide a detailed analysis of interference and near-field effects. We show that the presence of a Rayleigh scatterer may enhance the specular reflection or specular transmission under certain conditions. Finally, we analyze the enhancement of absorption in the bulk in the presence of a small scatterer.

Domaines: Optique / photonique

Nir Dahan, Jean-Jacques Greffet. Enhanced scattering and absorption due to the presence of a particle close to an interface. Optics Express, 2012, 20, pp.A530. ⟨hal-00785311⟩