Surface density enhancement of gold in silica film under laser irradiation at 355 nm

Journal Article · Mon Jul 26 04:00:00 EDT 2004 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1777391· OSTI ID:20632691

Jonnard, P; Dufour, G; Rullier, J -L; Morreeuw, J -P; Donohue, J T ^[1]

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1. 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, Journal Name: Applied Physics Letters Journal Issue: 4 Vol. 85; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DENSITY
GOLD
IRRADIATION
LASERS
NANOSTRUCTURES
PARTICLES
SILICA
THIN FILMS
X-RAY PHOTOELECTRON SPECTROSCOPY