23 May 2013 High efficiency, high pulse energy fiber laser system
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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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