Surface density enhancement of gold in silica film under laser irradiation at 355nm
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 2.5nm. Different parts of the sample were irradiated at wavelength 355nm...
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Veröffentlicht in: | Applied physics letters 2004-07, Vol.85 (4), p.591-593 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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 2.5nm. Different parts of the sample were irradiated at wavelength 355nm and fluences up to 1J∕cm2. By looking with x-ray photoelectron spectroscopy at the intensity of the Au4f peak relative to that of the Si2p 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. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.1777391 |