Wave propagation and spatial dispersion in random media

Yves-Patrick Pellegrini (1) , Pascal Thibaudeau (2) , Brian Stout (3)

1 DAM/DIF - DAM Île-de-France
2 CEA Le Ripault - CEA Le Ripault
3 FRESNEL - Institut FRESNEL

The study of spatial dispersion in electromagnetic wave propagation in random media is approached via the quasi-crystalline approximation in the framework of multiple-scattering theory. Longitudinal and transverse permittivity kernels are obtained explicitly by using a simplified resonant model for the T-matrix of the scatterers. The transverse dispersion equation is solved numerically for all its frequency-dependent solutions in a given domain of the complex plane. The physical meaning of these solutions is discussed.

Mots clés: Random media; spatial dispersion; quasicrystalline approximation; T-matrix

Domaines: Optique [physics.optics]; Science des matériaux [cond-mat.mtrl-sci]; Physique Générale [physics.gen-ph]

Yves-Patrick Pellegrini, Pascal Thibaudeau, Brian Stout. Wave propagation and spatial dispersion in random media. Journées Maxwell 1995, Jun 1995, Bordeaux, France. pp 335-338. ⟨hal-00412494⟩