15 February 2018 Control of pulse duration and shape in a 400-W Q-switched 532-nm laser
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Abstract
We present a 400 W Q-switched 532 nm laser using several techniques to control the pulse duration and shape. The laser consists of two separate intracavity frequency-doubled cavities, incoherently combined to give 50 mJ total pulse energy. By extending the cavity length the pulse duration can be increased from 66 ns to 140 ns at 8 kHz with no significant power reduction. Varying the repetition rate and the triggering delay for each cavity’s Q-switch allows further adjustment of the pulse duration. The pulse shape can be controlled by adjusting this delay and attenuating the individual cavities.
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Simon Chard, Timothy S. McComb, Ying Chen, Michael Barty, Young Key Kwon, "Control of pulse duration and shape in a 400-W Q-switched 532-nm laser", Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 1051113 (15 February 2018); doi: 10.1117/12.2290087; https://doi.org/10.1117/12.2290087
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