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.
Physical Review Letters
- Pub Date:
- January 2004
- Wave propagation in random media;
- Liquid crystals;
- Orientational order of liquid crystals;
- electric and magnetic field effects on order