H. Knobloch et al., PROBING THE EVANESCENT FIELD OF PROPAGATING PLASMON SURFACE-POLARITONS BY FLUORESCENCE AND RAMAN SPECTROSCOPIES, The Journal of chemical physics, 98(12), 1993, pp. 93-95
Flourescence and Raman scattering intensities have been measured for d
ifferent probe molecules positioned at various defined separation dist
ances from a Ag grating carrying a propagating plasmon surface polarit
on mode. Thus, the evanescent decay length of such a surface-electroma
gnetic wave could be mapped out, and was found to agree with theoretic
al predictions based on a Fresnel formalism.