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Updated: Jun 11, 2026
Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
In situ detection and analysis of laser-induced damage on a 1.5-m multilayer-dielectric grating compressor for
J Qiao1, A W Schmid, L J Waxer
1Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA. jqia@lle.rochester.edu
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.
