Abstract
We demonstrate an Yb:YAG femtosecond-laser-written channel-waveguide-laser with record-high average-output-power of 5.7 W and 78% slope-efficiency in CW and 5.3 W for Q-switched operation with 11-ns pulses and ~1-μJ energy at 5.4-MHz repetition-rate.
© 2016 Optical Society of America
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