Surface density enhancement of gold in silica film under laser irradiation at 355 nm
- Laboratoire de Chimie Physique-Matiere et Rayonnement, Universite Pierre et Marie Curie, UMR-CNRS 7614, 11 rue Pierre et Marie Curie, F-75231 Paris Cedex 05 (France)
In order to understand the damage mechanisms inside the optics of the high power laser facilities, a model sample has been prepared by introducing gold nanoparticles into a silica film. The mean diameter of the gold clusters is 2.5 nm. Different parts of the sample were irradiated at wavelength 355 nm and fluences up to 1 J/cm{sup 2}. By looking with x-ray photoelectron spectroscopy at the intensity of the Au 4f peak relative to that of the Si 2p peak, a surface Au density enrichment is observed. We interpret this as indicating that the gold atoms migrate toward the surface upon the laser irradiation.
- OSTI ID:
- 20632691
- Journal Information:
- Applied Physics Letters, Vol. 85, Issue 4; Other Information: DOI: 10.1063/1.1777391; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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