Method and apparatus to dynamically control the resonator gain of a laser
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United States of America Patent
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Apr 20, 1993
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N/A
app pub date -
Jun 10, 1991
filing date -
Jun 10, 1991
priority date (Note) -
Expired
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Abstract
A method or apparatus for controlling the output pulse of a Q-switched laser. The intensity of laser light within the resonator of a Q-switch laser is sensed. A reference pulse related to a desired laser output pulse shape is compared with the sensed intensity. A variation signal corresponding to differences between the sensed light intensity and the reference pulse is fed to a Pockels cell or Q-switch within the resonator. The Q-switch responds to the variation signal by altering the resonator laser light polarization to maintain the Q-switch laser's output pulse in the desired shape. The reference pulse may be dynamically altered to change the shape of the output pulse.
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