20 February 2007 High power 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, Thomas H. Loftus, Paul R. Hoffman, Paul R. Hoffman, Alison M. Thomas, Alison M. Thomas, Marc Norsen, Marc Norsen, Robert Royse, Robert Royse, Eric Honea, Eric Honea, } "High power spectrally beam combined fiber laser with near-diffraction limited beam quality", Proc. SPIE 6453, Fiber Lasers IV: Technology, Systems, and Applications, 64530S (20 February 2007); doi: 10.1117/12.702574; https://doi.org/10.1117/12.702574
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