Abstract
Stray light in high-power laser facilities not only decreases the gain capacity
of the main amplifier, but can also cause permanent damage to optical components,
greatly threatening the safety operation of the SG-III. This Letter reports a technique
for quickly pinpointing the source of stray light in the main amplification optical path
of the SG-III. The achieved results indicate that the accuracy of our method is up to
1 m in an optical path of 100 m. The judging method is effective for examining and
removing harmful stray light in the SG-III laser facility and it can be promoted in huge
laser facilities of this kind.
© 2015 Chinese Laser Press
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