Rough surface enhanced scattering

The subject of scattering of electromagnetic waves from a rough surface has been an active research area for a long time. Among them, one of the most interesting phenomena associated with the scattering of the light from a rough surface is the enhanced backscattering. We have reported a giant enhanced backscattering peak for a weakly rough dielectric film on a reflecting metal substrate. Recently, we have measured larger enhanced backscattering from different samples of paints, paper, and metal surfaces. When the incident angle is large, a significant enhanced backscattering peak is measured from grazing angle. Not all manifestations of localization in the interaction of light with rough surfaces are in backscattering. We have also measured much larger enhanced reflection and enhanced transmission for a rough surface with even symmetry. This may be due to the multiple interference of diffused light.