Abstract

A wave propagating in a strongly scattering medium experiences many scattering events which rapidly erase the memory of its initial direction on a typical scale length l* known as the transport mean free path. On larger scales, the propagation can be described by a diffusion process which yields the familiar Ohm's law : the transmission of a slab of thickness L scales as 1/L. Despite its historical success, this description discards the interference between multiply scattered waves. It is now known that interference can profoundly alter the wave transport, a spectacular manifestation being weak and strong localisation of waves [1].

© 2000 IEEE