Laser beam amplifier and laser apparatus using the same
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United States of America Patent
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Aug 4, 2015
Grant Date -
Sep 26, 2013
app pub date -
May 15, 2013
filing date -
Jan 14, 2009
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Abstract
A laser beam amplifier with high optical axis stability is provided. The laser beam amplifier includes: a container for accommodating a laser medium; a pair of electrodes for performing discharge in the laser medium to form an amplification region for a laser beam in the laser medium; and an optical system for forming an optical path between a first point, upon which the laser beam is incident, and a second point, from which the laser beam is outputted, such that the amplification region is located in the optical path between the first point and the second point, wherein the first point and the second point are conjugate to each other, and the laser beam incident upon the first point is amplified while passing through the amplification region at least twice and then transferred to the second point.
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