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

Alexander L. Harris; Lewis J. Rothberg; L. H. Dubois; N. J. Levinos; Lisa Dhar

doi:10.1117/12.17884

1 July 1990 Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectrosopy

Alexander L. Harris, Lewis J. Rothberg, L. H. Dubois, N. J. Levinos, Lisa Dhar

Proceedings Volume 1208, Laser Photoionization and Desorption Surface Analysis Techniques; (1990) https://doi.org/10.1117/12.17884
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

Vibrational energy relaxation of the symmetric C-H stretching mode of methyl thiolate on a Ag(l 1 1) surface is measured by picosecond infrared-visible sum frequency generation. Vibrational relaxation lifetime components of ~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.

Citation Download Citation

Alexander L. Harris, Lewis J. Rothberg, L. H. Dubois, N. J. Levinos, and Lisa Dhar "Vibrational energy relaxation of methyl thiolate/Ag(111) by picosecond IR-visible sum spectrosopy", Proc. SPIE 1208, Laser Photoionization and Desorption Surface Analysis Techniques, (1 July 1990); https://doi.org/10.1117/12.17884

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available