In situ observation of UV-laser-induced deposit formation by fluorescence measurement

H. Schröder; W. Riede; E. Reinhold; D. Wernham; Y. Lien; H. Kheyrandish

doi:10.1117/12.695347

15 January 2007 In situ observation of UV-laser-induced deposit formation by fluorescence measurement

H. Schröder, W. Riede, E. Reinhold, D. Wernham, Y. Lien, H. Kheyrandish

Proceedings Volume 6403, Laser-Induced Damage in Optical Materials: 2006; 64031K (2007) https://doi.org/10.1117/12.695347
Event: Boulder Damage Symposium XXXVIII: Annual Symposium on Optical Materials for High Power Lasers, 2006, Boulder, Colorado, United States

Abstract

We investigated the formation of UV laser induced deposits on uncoated and coated fused silica optics under vacuum conditions in presence of outgassing materials. As contamination samples epoxy, silicone and polyurethane containing materials were used. To realize low partial pressures of the contaminants in the gas phase they were slightly heated (40°C). The formation of the depositions was monitored in situ and online by detecting the fluorescence emission of the deposits, excited by the UV laser beam. The influence of different optical coatings on the deposit formation was studied. By analysing the surface profiles of the deposits, growth rates were estimated. Time-of-flight secondary ion mass spectroscopy was used for chemical characterization of the deposits.

Citation Download Citation

H. Schröder, W. Riede, E. Reinhold, D. Wernham, Y. Lien, and H. Kheyrandish "In situ observation of UV-laser-induced deposit formation by fluorescence measurement", Proc. SPIE 6403, Laser-Induced Damage in Optical Materials: 2006, 64031K (15 January 2007); https://doi.org/10.1117/12.695347

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