, Volume 102, Issue 3, pp 509-514

Thermal analysis and efficient high power continuous-wave and mode-locked thin disk laser operation of Yb-doped sesquioxides

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We report on thermal conductivity analysis and thin disk laser power scaling of Yb:Lu2O3, Yb:Sc2O3, and Yb:LuScO3. Using a volume Bragg-grating stabilized pump diode we have obtained cw output powers up to 301 W with optical-to-optical efficiencies of up to 73%. In mode-locked operation of an Yb:Lu2O3 thin disk laser 141 W of average output power with 738 fs pulses and an optical-to-optical efficiency of 40% were achieved.