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Optica Publishing Group
  • International Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 1990),
  • paper QTHL1

Ultrafast dynamics of solvated small molecules from resonance Raman spectroscopy

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Abstract

Resonance Raman spectroscopy can be a valuable probe of solvation effects on both electronic and vibrational molecular dynamics. For electronic excitations accompanied by large geometry changes, including but not limited to direct dissociation, the resonance Raman fundamental, overtone, and combination band intensities provide a high resolution window onto the excited state dynamics.1 The emission band shapes and quantum yields of Raman and fluorescence type emission are determined by electronic population decay and pure dephasing processes in solution.2 Finally, the vibrational frequencies of the highly excited overtones and combination bands that can often be observed for small molecules on resonance allow the solvation perturbed ground state potential surface to be mapped out in detail, while the linewidths are determined by the ground state dephasing rates for these highly excited vibrations.

© 1990 Optical Society of America

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