Title :
Laser-induced damage of metal mirrors under long-term exposure at shallow angle of incidence
Author :
Zaghloul, M.R. ; Tillack, M.S. ; Mau, T.K.
Author_Institution :
Center for Energy Res., Univ. of California, San Diego, CA, USA
Abstract :
Laser induced damage (LID) experiments were performed with a 2-J frequency-multiplied Nd:YAG laser at 1/2 μm wavelength and a variety of metal mirrors (pure and impure diamond-turned) at shallow angle of incidence to study the sensitivity of these mirrors to LID under long term exposure. Practical lifetime curves for Al-1100 and 99.999% pure Al mirrors have been established up to 104 shots of operation. The results show general agreement with theoretical predictions.
Keywords :
aluminium; laser beam effects; laser fusion; laser mirrors; plasma inertial confinement; 0.5 micron; 2 J; Al; IFE; YAG:Nd; YAl5O12:Nd; frequency-multiplied Nd:YAG laser; inertial fusion energy; laser fusion; laser-induced damage; lifetime curves; long-term exposure; metal mirrors; shallow incidence angle; Artificial intelligence; Laser beams; Mirrors; Optical surface waves; Plastics; Reflectivity; Surface cracks; Surface emitting lasers; Temperature; Thermal stresses;
Conference_Titel :
Fusion Engineering, 2002. 19th Symposium on
Print_ISBN :
0-7803-7073-2
DOI :
10.1109/FUSION.2002.1027693
