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  • International Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 1984),
  • paper PDC3

DOUBLE-RESONANCE METHODS FOR IONIZATION-DETECTED RAMAN SPECTROSCOPY

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Abstract

In this paper we report the first application of Ionization-Detected Stimulated Raman Spectroscopy (IDSRS) to a polyatomic system, benzene. In previous studies performed on nitric oxide, IDSRS has shown potential for providing many orders of magnitude increase in sensitivity for very high-resolution studies of weak Raman scatterers. The present work not only establishes the application of IDSRS to larger molecular systems, but gives a striking illustration of the selectivity available in such a multistep excitation scheme. The "Raman-double-resonance" condition, involving the resonant UV ionization of molecules that have been vibrationally excited by the stimulated Raman process, is shown to provide a means of separating complex spectra of two overlapping vibrational bands. This "tagging" of the individual bands will be an effective aid in the identification and assignment of their spectral features.

© 1984 Optical Society of America

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