
405High-Power Coatings for NIR Lasers
Chapter 14
mirror (Primak and Kampwirth, 1968). Uniform irradiation of both surfaces is neces-
sary to maintain the reected wavefront of a mirror. Alternatively, nonuniform irradia-
tion can be used to compensate for excessive coating stresses by balancing the stresses
from nonuniform compaction to reduce aer coating reected wavefront performance.
Gamma irradiation for substrate darkening has been found to have minimal impact
on the 1064nm laser resistance of nanosecond-length laser pulses; however, a signi-
cant reduction in the 1064nm laser resistance at picosecond-length pulses has been
observed. A mi ...