Damage precursor measurements on UV-optical coatings

Conference · Sun Dec 31 00:00:00 EST 1995

OSTI ID:552220

Ettrich, K; Blaschke, H; Welsch, E ^[1]

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1. 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; TRN: 98:009030
• Resource Relation: Conference: 26. annual Boulder damage symposium: laser-induced damage in optical materials, Boulder, CO (United States), 24-26 Oct 1994; Other Information: PBD: [1995]; Related Information: Is Part Of Laser-induced damage in optical materials: 1994. Twenty-sixth annual Boulder damage symposium, proceedings; Bennett, H.E.; Guenther, A.H.; Kozlowski, M.R.; Newnam, B.E.; Soileau, M.J. [eds.]; PB: 722 p.
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
36 MATERIALS SCIENCE
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
REFLECTIVE COATINGS
DAMAGE
PHYSICAL RADIATION EFFECTS
ALUMINIUM OXIDES
SILICA
LANTHANUM FLUORIDES
MAGNESIUM FLUORIDES
LASER RADIATION
THIN FILMS
ULTRAVIOLET RADIATION
LASER MATERIALS
MIRRORS