Abstract

Nonlinear spectroscopy has become a very powerful tool for studying vibrational and electronic transitions in molecules.¹ In particular, coherent anti-Stokes Raman scattering (CARS) has been predicted² and demonstrated experimentally³ to be a very efficient process when performed with guided waves. We report experiments in which guided wave CARS was used to detect and identify monolayers of TiO₂ on a Nb₂O₅ film surface.

© 1986 Optical Society of America