Paper
14 July 1995 Damage precursor measurements on UV optical coatings
K. Ettrich, Holger Blaschke, Eberhard Welsch
Author Affiliations +
Abstract
For application in UV thin film optics the thermal contribution to the laser-induced optical breakdown was investigated utilizing time-resolved photothermal probe beam deflection (MIRAGE) technique. The potentiality of this method for the determination of both the subdamage range and the onset of single-shot-damage of Al2O3/SiO2 and LaF3/MgF2 high-reflective coatings by using the thermal branch of the MIRAGE technique could be demonstrated. Examining the dielectric mirrors by 248 nm KrF laser irradiation, distinct damage precursor features were found. Thus, the physical origin of the UV-pulsed radiation breakdown in HR coatings can be elucidated.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. Ettrich, Holger Blaschke, and Eberhard Welsch "Damage precursor measurements on UV optical coatings", Proc. SPIE 2428, Laser-Induced Damage in Optical Materials: 1994, (14 July 1995); https://doi.org/10.1117/12.213763
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KEYWORDS
Optical coatings

Ultraviolet radiation

Multilayers

UV optics

Laser beam diagnostics

Laser optics

Signal detection

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