Abstract
Exploring the possibilities of enhancing the Raman effect near flat metallic surfaces, we theoretically consider Raman scattering (RS) via resonantly excited long-range surface polaritons (SP) of a thin metallic slab in the Sarid ATR configuration. In comparison with the Otto ATR configuration (thick slab) and for molecules near a realistically thin ( ~ 20 nm) silver slab, we have found that the SP radiation peak intensity in the prism is over 30 times larger. However, the integrated SP radiation intensity is almost equal in both cases. At lower angles the intensity of emitted radiation oscillates owing to the interference of multiply scattered light in the system, so that we also discuss the possibility of combining SP enhanced RS with interference enhanced RS (IERS).
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