ULTRASENSITIVE COHERENT RAMAN SPECTROSCOPY OF THIN FILMS AND SURFACES
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Publisher:Ohio State University
The structures of thin films, surfaces, and adsorbed surface spacies can be investigated using a new nonlinear optical method based on coherent Raman scattering and planar optical waveguides. Vibrational spectra are obtained from species in or on thin films into which laser beams have been coupled. Surface species down to submonolayer coverages can be detected through a coherent Raman interaction eith the evanesent fields extending above the film. Extensive calculations have been performed, including background reduction considerations, which agree with the experimental results based on polymer and metal oxide films.
Author Institution: Department of Chemistry, University of Arizona; Optical Sciences Center, University of Arizona
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