A Brownian motion model for laser-induced surface diffusion is proposed to account for the kinetics of surface transport of the evaporated molecules from a thin discontinuous film under a focused laser beam. The model is solved exactly where the evaporation rate of the molecules is assumed to be proportional to the temperature rise above the ambient of the absorber layer. The surface diffusion constant and molecular velocity are obtained by comparing the results of calculations with transmission electron micrographs of recorded pits in Te trilayer opticial discs. These values are in good agreement with Einstein's relation.
C. Wu and J. I. Gittleman, "Laser-Induced Surface Diffusion," Journal of Applied Physics, vol. 55, no. 8, pp. 2928-2934, American Institute of Physics (AIP), Apr 1984.
The definitive version is available at http://dx.doi.org/10.1063/1.333334
Electrical and Computer Engineering
Keywords and Phrases
Diffusion - Mathematical Models; Laser Beams - Effects; Surfaces
International Standard Serial Number (ISSN)
Article - Journal
© 1984 American Institute of Physics (AIP), All rights reserved.