Regensburg 2010 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 54: Photonic Crystals: Theory
HL 54.4: Vortrag
Donnerstag, 25. März 2010, 14:45–15:00, H13
Light Propagation in Anisotropic Disordered Media, Transverse Diffusion — •Andreas Lubatsch1 and Regine Frank2 — 1Physikalisches Institut, Universitaet Bonn, 53115 Bonn, Germany — 2Institut fuer Theoretische Festkoerperphysik, Universitaet Karlsruhe, 76128 Karlsruhe, Germnany
We present a semi-analytical theory for light propagation in three dimensional, strongly scattering, anisotropic , disordered dielectrics. The anisotropy of the system is incorporated by a tensor dielectric function. By starting at Maxwell’s equations, we derive a general transport theory for ligh including transport quantities such as energy transport velocity, transport mean free path and diffusion coefficient. This approach is based on a fully vectorial treatment of the generalized kinetic equation and also incorporates a generalized Ward identity for these systems. Furthermore, self-interference contribution to the transport are included by means of a generalized localization theory based on a cooperon resummation first derived for electrons by Vollhardt and Wölfle. Numerical evaluations including transverse diffusion in presence of magnetic fields are discussed.