Abstract
We report a three-channel, spectrally beam-combined (SBC), fiber laser that produces of average power with near-diffraction-limited beam quality. The laser features a SBC power combining efficiency of 93%, versatile master-oscillator, power-amplifier fiber channels with up to of narrowband, polarized, and near-diffraction-limited output that is tunable over nearly the entire gain bandwidth, and excellent prospects for significant power scaling. To our knowledge, these results represent the highest beam quality and average power achieved to date for a beam-combined fiber laser system.
© 2007 Optical Society of America
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