Diagnostics for the detection and evaluation of laser-induced damage

Lynn Matthew Sheehan; Mark R. Kozlowski; Frank Rainer

doi:10.1117/12.213743

14 July 1995 Diagnostics for the detection and evaluation of laser-induced damage

Lynn Matthew Sheehan, Mark R. Kozlowski, Frank Rainer

Proceedings Volume 2428, Laser-Induced Damage in Optical Materials: 1994; (1995) https://doi.org/10.1117/12.213743
Event: Laser-Induced Damage in Optical Materials: 1994, 1994, Boulder, CO, United States

Abstract

The Laser Damage and Conditioning Group at LLNL is evaluating diagnostics which will help make damage testing more efficient and reduce the risk of damage during laser conditioning. The work to date has focused on photoacoustic and scattered light measurements on 1064-nm wavelength HfO₂/SiO₂ multilayer mirror and polarizer coatings. Both the acoustic and scatter diagnostics have resolved 10 micrometers diameter damage points in these coatings. Using a scanning stage, the scatter diagnostic can map both intrinsic and laser-induced scatter. Damage threshold measurements obtained using scatter diagnostics compare within experimental error with those measured using 100x Nomarski microscopy. Scatter signals measured during laser conditioning can be used to detect damage related to nodular defects.

Citation Download Citation

Lynn Matthew Sheehan, Mark R. Kozlowski, and Frank Rainer "Diagnostics for the detection and evaluation of laser-induced damage", Proc. SPIE 2428, Laser-Induced Damage in Optical Materials: 1994, (14 July 1995); https://doi.org/10.1117/12.213743

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