STIMULATED RAMAN GAIN SCATTERING IN THIN PLANAR DIELECTRIC WAVE-GUIDES

The stimulated Raman gain effect in planar dielectric waveguides is an alyzed for the study of thin layers. Calculations show high gain facto rs and predict the possibility of detecting monolayers. Compared with those for methods based on reflection, the gain can be 4 orders of mag nitude higher for a monolayer of benzene. It is concluded that wavegui de stimulated Raman gain spectroscopy is a promising technique for the study of thin layers. (C) 1995 Optical Society of America