Damage precursor measurements on UV-optical coatings
Conference
·
OSTI ID:552220
- Friedrich-Schiller-Universitaet, Jena (Germany)
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 Al{sub 2}O{sub 3}/SiO{sub 2} and LaF{sub 3}/MgF{sub 2} 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.
- Research Organization:
- International Society for Optical Engineering, Washington, DC (United States)
- OSTI ID:
- 552220
- Report Number(s):
- CONF-9410155--Vol.2428
- Country of Publication:
- United States
- Language:
- English
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