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Tailored Crystals for Solid State Lasers

We report on our current research towards efficient lasers in the visible and mid-infrared spectral range using tailored active crystals. We achieved 0.45 W of direct yellow emission with Tb:LiLuF at a slope efficiency of 23 % and 0.28 W at 2856 nm at 20 % slope efficiency in Er-doped Scandia.