Laser oscillator having folding mirror
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United States of America Patent
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Oct 10, 2017
Grant Date -
Feb 2, 2017
app pub date -
Jul 22, 2016
filing date -
Jul 31, 2015
priority date (Note) -
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Abstract
A laser oscillator configured to limit a mode hopping over a long duration. A laser oscillator has an optical resonator including an output coupler and a rear mirror positioned on an optical axis, at least one folding mirror positioned on the optical axis and between the output coupler and the rear mirror, and a discharge tube positioned between the output coupler or the rear mirror and the folding mirror. At least one folding mirror has a toric surface shape, a saddle surface shape or a cylindrical shape, and is configured to rotate about a straight line as a rotation axis, which extends through one point on a surface of the folding mirror and is perpendicular to the surface of the folding mirror.
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