28 February 2009 Q-switched Nd:YAG lasers for high average-power and high peak-power operation
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Proceedings Volume 7193, Solid State Lasers XVIII: Technology and Devices; 719309 (2009); doi: 10.1117/12.814927
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States
Abstract
The direct side-pumping of Nd:YAG rods with laser diodes has been shown to be a cost effective scheme for scaling to simultaneous high average and high peak power operation. Careful control of the parameters that govern the performance of a multi-spatial mode MOPA system has led to the demonstration of reliable Q-switched average powers of up to 1600 W and peak powers in excess of 18 MW at the 1064 nm fundamental wavelength. The techniques used to refine the properties of an infrared stable resonator in order to optimise intra-cavity second harmonic generation are discussed. Average powers of up to 290 W and peak powers of up to 0.45 MW at 532 nm have been demonstrated from a single cavity. By polarisation multiplexing the outputs of two cavities emitting at 532 nm, we have achieved single-beam average and peak powers of up to 580 W and 0.9 MW respectively and gained flexible control of pulse duration and temporal shape.
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Mike Poulter, Nick Hay, Ben Fulford, Paul Campton, Mike Mason, David Burns, "Q-switched Nd:YAG lasers for high average-power and high peak-power operation", Proc. SPIE 7193, Solid State Lasers XVIII: Technology and Devices, 719309 (28 February 2009); doi: 10.1117/12.814927; https://doi.org/10.1117/12.814927
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KEYWORDS
Resonators

Q switching

Optical amplifiers

Mirrors

Nd:YAG lasers

Medium wave

Polarization

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