Anisotropic weak localization of light

Phys Rev Lett. 2004 Jan 23;92(3):033903. doi: 10.1103/PhysRevLett.92.033903. Epub 2004 Jan 23.

Abstract

We have observed angular anisotropy in weak localization of light from highly scattering, orientationally ordered, nematic liquid crystals. This demonstration of angular anisotropy in a multiple-scattering interference phenomenon was facilitated by a light scattering instrument with extraordinary angular resolution. The measured anisotropies were consistent with a simple model of coherent backscattering generalized for propagation-direction dependent mean free paths.