Surface Roughness Effect on Raman Scattering from Surface Polaritons

Abstract

We present numerical studies of Raman scattering from surface polaritons in a free-standing thin sample with rough surfaces, as experimentally observed earlier by Ushioda, Aziza, Valdez and Mattei. The surface roughness is assumed to be represented by a sinusoidal grating. In our model, the net enhancement of the Raman cross section is shown to arise from excitation of guided mode polaritons.