A continuous-wave depressed-index channel waveguide laser fabricated by fs direct-laser-writing in monoclinic Tm:KLu(WO4)2 generated 1.07 W at 1.84 μm with a slope efficiency of 69.5%. Passive Q-switching by Cr2+:ZnS resulted in 2.6 ns/6.9 μJ pulses.

© 2019 The Author(s)

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