Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectroscopy

A. L. Harris*, L. Rothberg, L. H. Dubois, N. J. Levinos, L. Dhar

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Vibrational energy relaxation of the symmetric C-H stretching mode of methyl thiolate on a Ag(111) surface is measured by picosecond infrared-visible sum frequency generation. Vibrational relaxation lifetime components of Approximately 3 ps and 63 ps are observed at 300 K. The long lifetime component shows a moderate temperature dependence. Both population relaxation components are assigned to intramolecular energy transfer on the basis of comparisons with other measurements and the predicted temperature dependence of intramolecular relaxation rates. Direct energy transfer to electronic or vibrational degrees of freedom in the substrate is not found to be important for this vibrational mode.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsS.Nicolas Nogar
PublisherPubl by Int Soc for Optical Engineering
Pages99-104
Number of pages6
ISBN (Print)0819402494
StatePublished - 1990
Externally publishedYes
EventLaser Photoionization and Desorption Surface Analysis Techniques - Los Angeles, CA, USA
Duration: Jan 18 1990Jan 19 1990

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1208
ISSN (Print)0277-786X

Conference

ConferenceLaser Photoionization and Desorption Surface Analysis Techniques
CityLos Angeles, CA, USA
Period1/18/901/19/90

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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