Abstract
A high-purity molybdenum (Mo) mirror was developed by an electron-beam melting method (e.b.m. Mo mirror). For the high-power TEA CO2 laser, the e.b.m. Mo mirror has two to four times higher surface damage threshold than that of an Au-coated glass mirror and three times longer lifetime than that of a powder metallurgy Mo mirror (p.m. Mo mirror) when laser energy density lower than 60 J/cm2 was irradiated with a 0.5-pps repetition rate. It was found that the difference between the e.b.m. Mo mirror and the p.m. Mo mirror at the laser-damage threshold was due to the fine surface without voids and the small amount of impurities.
© 1987 Optical Society of America
Full Article | PDF ArticleMore Like This
Cheng-Chung Lee and Cheng-Wei Chu
Appl. Opt. 26(13) 2544-2548 (1987)
F. J. Duarte
Appl. Opt. 24(1) 34-37 (1985)
Harold E. Bennett, Arthur H. Guenther, David Milam, and Brian E. Newnam
Appl. Opt. 26(5) 813-827 (1987)