Patent
Q-switched laser with stabilized output energy
Peter Bane,Marcus Gustafsson +1 more
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In this article, the authors described a laser arrangement and a method of the laser arrangement, arranged to output energy in the form of laser emission, for emitting controlled Q-switched laser emission.Abstract:
The present disclosure relates a laser arrangement ( 1 ) and a method of the laser arrangement, arranged to output energy in the form of laser emission, for emitting controlled Q-switched laser emission. The laser arrangement comprises a gain medium ( 2 ) arranged to be excited when pumped, an optical resonator ( 3 ), an active Q-switch ( 4 ) arranged in the optical resonator, said active Q-switch ( 4 ) being controllable between at least a high loss state and a low loss state, and being arranged to introduce loss in the optical resonator to prevent lasing in the high loss state and to affect lasing minimally in the low loss state, a photo detector ( 5 ) arranged to detect the presence of a free running pulse ( 1 ′) generated by the optical resonator and which occurs when a lasing threshold is reached and a processing circuitry ( 6 ) arranged to control (S 4 ) of the state of the active Q-switch based on the detection of the free running pulse.read more
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Patent
Passive Q-switched laser repetition frequency stabilizing device
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Patent
Laser system for controlling emitted pulse energy
John Hunter,Sunil Gupta +1 more
TL;DR: In this article, a laser system controlling laser pulse energy by feedback to the laser Q-switch was described. But the system was not shown to be able to adjust the output pulse energy to substantially equal an energy setpoint.
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Passively Q-switched laser with adjustable pulse repetition rate
TL;DR: In this article, a method for varying a pulse repetition rate of a passively q-switched laser while maintaining other characteristics of the laser radiation is described, where the laser is optically pumped with a sequence of pump pulses which includes power offset which magnitude and/or duration is adjusted when the laser repetition rate is changed.
Patent
Method and laser system for generating laser radiation of specific temporal shape for production of high quality laser-induced damage images
Eugene Raevsky,Igor Troitski +1 more
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Generation and application of efficient solid-state laser pulse trains
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Active Q-switched high power single mode laser
TL;DR: In this article, a single-mode laser with a Q-switch for switching on and off in two stages is described, firstly to a relatively high loss level just above threshold where it is held to permit a train of relaxation oscillator spikes to be established and then it is switched to a second stage in a lossless state to allow the resonant mode within the laser to build up to maximum power.