Abstract
We analyze how the presence of an optical Fabry-Pérot cavity affects the surface enhanced Raman (SERS) bands of rhodamine 6G (R6G) in terms of their intensity. The study is focused on the relation between the intensity of the SERS bands and the reflectance which is inherent to the examined structure rather than on the enhancement factor. For this purpose, multilayered Si/SiO2 structures decorated with discontinuous vapour deposited silver films were utilized as an active layer for SERS and a bond for the solution of R6G. We related the intensity of the SERS bands in R6G caused by interference to the reflectances at the wavelengths of the excitation and scattered light.
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