General theory of the Raman scattering close to a plane surface. Evanescent Raman spectra

We present a general theory of Raman scattering near the surface of a plane dielectric medium. All possible cases are considered but only the ones in which evanescent waves are present are discussed (evanescent excitation or/and evanescent scattering). In each case the intensity and angular distribution patterns of the scattered light are discussed. The problem of measurement of depolarization ratios of Raman bands is also considered.