title: Pulsed laser-induced damage of metals at 492 nm.
abstract: A triaxial flashlamp-pumped dye laser has been used to perform laser damage testing of metal surfaces in the blue-green spectral region. Using LD490 laser dye, the laser produces 0.18-J, 0.5-microsec pulses at 492 nm. The spatial profile of the focused beam is measured in orthogonal directions in the plane of the sample surface. The orthogonal profiles are flat-topped Gaussians with 1/e(2) widths of 270 microm. Multithreshold laser damage test results are presented for polished Mo, diamond-turned high-purity Al alloy, diamond-turned bulk Cu, and diamond-turned electrodeposits of Ag and Au on Cu. Comparisons are made between calculated and experimentally measured slip and melt thresholds.
authors.affiliation: US Naval Weapons Center, Physics Division, Michelson Laboratory, China Lake, California 93555, USA.
authors.forename: C D
authors.initials: CD
authors.lastname: Marrs
authors.forename: W N
authors.initials: WN
authors.lastname: Faith
authors.forename: J H
authors.initials: JH
authors.lastname: Dancy
authors.forename: J O
authors.initials: JO
authors.lastname: Porteus