Laser system
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United States of America Patent
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Dec 1, 2015
Grant Date -
Sep 4, 2014
app pub date -
Dec 16, 2013
filing date -
Dec 18, 2012
priority date (Note) -
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Abstract
A laser system comprising a laser configured to generate a laser beam, a power supply arranged to provide a drive power to the laser, a photodetector arranged to detect the power of the laser beam and provide a detection signal from the power of the laser beam and a feedback loop arranged to form a feedback signal by subtracting a target signal from the detection signal wherein the feedback signal has a high bandwidth, amplify the feedback signal and adjust the drive power according to the amplified feedback signal, thereby reducing noise in the laser beam.
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