title: In situ detection and analysis of laser-induced damage on a 1.5-m multilayer-dielectric grating compressor for high-energy, petawatt-class laser systems.
abstract: A grating-inspection system and a damage-analysis method have been developed to measure in situ laser-induced damage on a 1.5-m tiled-grating assembly of the OMEGA EP pulse compressor during a 15-ps, 2.2-kJ energy ramp. The beam fluence at which significant damage growth occurred was determined. This is the first report on beam fluence versus laser-induced-damage growth of meter-sized multilayer-dielectric-diffraction gratings. This result was correlated to the damage-probability measurement conducted on a small grating sample and is consistent with the fluence, corresponding to 100% damage probability.
authors.affiliation: Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA. jqia@lle.rochester.edu
authors.forename: J
authors.initials: J
authors.lastname: Qiao
authors.forename: A W
authors.initials: AW
authors.lastname: Schmid
authors.forename: L J
authors.initials: LJ
authors.lastname: Waxer
authors.forename: T
authors.initials: T
authors.lastname: Nguyen
authors.forename: J
authors.initials: J
authors.lastname: Bunkenburg
authors.forename: C
authors.initials: C
authors.lastname: Kingsley
authors.forename: A
authors.initials: A
authors.lastname: Kozlov
authors.forename: D
authors.initials: D
authors.lastname: Weiner
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D012031:Refractometry / Q000295:instrumentation*