Femtosecond time-resolved probing of desorption

Judith A. Prybyla; Harry W.K. Tom

doi:10.1117/12.148514

2 July 1993 Femtosecond time-resolved probing of desorption

Judith A. Prybyla, Harry W.K. Tom

Author Affiliations +

Proceedings Volume 1857, Lasers and Optics for Surface Analysis; (1993) https://doi.org/10.1117/12.148514
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

The laser-induced desorption of CO molecules from a Cu(111) surface is probed with 100 fsec time-resolution. This is accomplished in a pump-probe scheme using surface second harmonic generation as the probe. We find that the desorption reaction is completed in -18 cm²) desorption is a novel one: the transient hot substrate electrons (T_electron,max approximately 3600 K, while T_lattice,max approximately 160 K) drive multiple electronic excitation-de-excitation cycles of the CO-Cu complex within the vibrational relaxation time. This vibrationally pumps the molecules into desorbing.

Citation Download Citation

Judith A. Prybyla and Harry W.K. Tom "Femtosecond time-resolved probing of desorption", Proc. SPIE 1857, Lasers and Optics for Surface Analysis, (2 July 1993); https://doi.org/10.1117/12.148514

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