CONTROLLING EMISSION OF AN OPTICAL PULSE FROM A LASER
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United States of America Patent
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Dec 8, 2016
app pub date -
Jun 3, 2016
filing date -
Jun 5, 2015
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Abstract
A method for use in controlling emission of an optical pulse from a laser comprises pumping a gain medium of a laser at a rate which is limited so that free-running passive Q-switching of the laser is prevented regardless of a duration of pumping of the gain medium. The method further comprises triggering a saturable absorber of the laser so as to reduce a laser cavity loss below a laser cavity gain and cause an optical pulse to be emitted from the laser at a desired emission time. Such a method may provide for the reduction of pulse-to-pulse timing jitter, the control of energy of the emitted optical pulse and/or for the suppression of the emission of multiple optical pulses that may otherwise occur for free-running passive Q-switching of the laser for sufficient gain medium pumping rates.
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