20 April 1998 Laser-induced damage in optical coatings and laser condition technology
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Abstract
Laser-induced damages in several reflection coatings that are prepared with variant materials and technologies are investigated. It is found that the damage thresholds of the coatings are very different depending on the impurity absorption. We proved this conclusion by applying Auger Electron Spectroscopy to determine the surface composition of the coatings and measuring of the absorption of these coating. Laser condition of a large size coating is realized through scanning of a smaller laser spot. The condition is achieved through roistering at ten steps increasing from 5 to 80 percent of the zero probability damage threshold of the coating. The effect of the laser condition is directly related to the preparation process and the materials of the coating.
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Zhengxiu Fan, Qiang Zhao, Hong Qiu, Rui-Ying Fan, "Laser-induced damage in optical coatings and laser condition technology", Proc. SPIE 3244, Laser-Induced Damage in Optical Materials: 1997, (20 April 1998); doi: 10.1117/12.307015; https://doi.org/10.1117/12.307015
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KEYWORDS
Laser applications

Optical coatings

Laser induced damage

Laser optics

Absorption

Laser damage threshold

Materials processing

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