Surface Enhanced CARS on Metal Surfaces and Metal Colloids

  • F. W. Schneider
Conference paper
Part of the NATO Advanced Study Institutes Series book series (ASIC, volume 93)

Abstract

Surface enhanced Raman scattering (SERS) from molecules on metal surfaces has been observed for a variety of systems almost exclusively by the method of spontaneous Raman scattering (1). In remarkable work a coherent Raman method has been used by Shen and coworkers (2,3) who investigated surface CARS of benzene adsorbed in multilayers on a silver surface. These authors interpret their findings as a four wave mixing process of plasmon waves which are confined to a surface layer of silver atoms of a few Ångstrom thickness in contact with bulk benzene. This process occurs in the metal/dielectric interface and it can be understood on the basis of ordinary bulk CARS with surface boundary conditions. The main optical trick in the experiment is to couple the CARS wave out of the surface without great loss of intensity. This has been achieved by the so-called Kretschmann geometry which uses a glass prism on to whose largest side a thin layer of silver has been deposited The latter is in physical contact with the liquid sample to be investigated (Fig. 1).

Keywords

Benzene Pyridine Dine Benzen Ruby 

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Copyright information

© D. Reidel Publishing Company 1982

Authors and Affiliations

  • F. W. Schneider
    • 1
  1. 1.Institut für Physikalische ChemieUniversität WürzburgWürzburgWest Germany

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