Kinetics of laser-induced desorption from nonmetallic surfaces

Richard F. Haglund Jr.

doi:10.1117/12.147609

24 June 1993 Kinetics of laser-induced desorption from nonmetallic surfaces

Richard F. Haglund Jr.

Proceedings Volume 1856, Laser Radiation Photophysics; (1993) https://doi.org/10.1117/12.147609
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

We present a model for the kinetics of laser-induced desorption of atoms from perfect nonmetallic surfaces, based on recent experiments in alkali halides and compound semiconductors. For the sake of specificity we consider situations in which the photon energy E_hv is less than the bandgap energy E_gap, so that the density of bulk electronic excitation created by the laser-surface interaction is small. We show desorption-yield calculations as a function of laser intensity for the case of solids with strong electron-lattice coupling (alkali halides) and weak-coupling solids (compound semiconductors). These distinctive features may allow extrapolation to the case of intermediate coupling which includes many technologically important oxides.

Citation Download Citation

Richard F. Haglund Jr. "Kinetics of laser-induced desorption from nonmetallic surfaces", Proc. SPIE 1856, Laser Radiation Photophysics, (24 June 1993); https://doi.org/10.1117/12.147609

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