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10 May 2007 522 W spectrally beam combined fiber laser with near-diffraction limited beam quality
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Abstract
We describe a three-channel, spectrally beam combined (SBC), 1-&mgr;m fiber laser that features a SBC power combining efficiency of 93%, versatile master-oscillator, power-amplifier (MOPA) fiber channels with up to 260 W of narrowband, polarized, and near-diffraction limited output, and currently produces 522 W of average power with a dispersed (non-dispersed) beam quality at 522 W of 1.18x (1.22x) diffraction limited. To our knowledge, these results represent the best combination of output power and beam quality achieved by SBC to date.
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Thomas H. Loftus, Raul Hoffman, Alison M. Thomas, Marc Norsen, Robert Royse, and Eric Honea "522 W spectrally beam combined fiber laser with near-diffraction limited beam quality", Proc. SPIE 6552, Laser Source Technology for Defense and Security III, 65520O (10 May 2007); https://doi.org/10.1117/12.719789
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