23 May 2013 High efficiency, high pulse energy fiber laser system
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Abstract
We report a master-oscillator/power-amplifier laser system featuring a polarizing and coilable 40-micron-core Yb-doped photonic crystal fiber as the final-stage amplifier. The laser source generates 3.4 ns pulses at a repetition rate 19 kHz, with maximum pulse energy 1.2 mJ, maximum average power 22.8 W, near diffraction-limited (M2 < 1.1) beam quality, and 20% electrical to optical efficiency in a compact package. This pulsed-fiber laser flight system provides high pulse energy, average power, peak power, diffraction limited beam quality, and high efficiency all in a thermally and mechanically stable compact package.
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Mark S. Bowers, Mark S. Bowers, Jason Henrie, Jason Henrie, Megan Garske, Megan Garske, Dan Templeman, Dan Templeman, Robert Afzal, Robert Afzal, } "High efficiency, high pulse energy fiber laser system", Proc. SPIE 8733, Laser Technology for Defense and Security IX, 87330Y (23 May 2013); doi: 10.1117/12.2014313; https://doi.org/10.1117/12.2014313
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