Ytterbium-doped transparent ceramics based on cubic garnets are promising for thin-disk lasers. 3.6 at.% Yb:Lu3Al5O12 transparent ceramics were fabricated by a solid-state reaction at 1800 °C in vacuum using Yb:Lu2O3 and Al2O3 nanopowders produced by laser ablation and their spectroscopic properties were studied. The stimulated-emission crosssection is 2.46×10-20 cm2 at 1030.2 nm. The Stark splitting of the Yb3+ multiplets was also determined. A compact CW Yb:Lu3Al5O12 ceramic laser pumped by a fiber-coupled 968 nm InGaAs laser diode generated 5.65 W at ~1031 nm with a slope efficiency of 67.2%. Using quasi-CW pumping, the peak power reached 8.83 W.
Efficient laser operation of Yb:Lu3Al5O12transparent ceramics fabricated from laser ablated nanopowders
Solid State Lasers XXIX: Technology and Devices ; 2020 ; San Francisco,California,United States
Proc. SPIE ; 11259
2020-02-21
Conference paper
Electronic Resource
English
Eu:Lu2O3 transparent ceramics fabricated by vacuum sintering of co-precipitated nanopowders
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