kW-class ceramic Yb:Lu2O3 thin disk laser

In the recent years, the development of rare-earth doped sesquioxides as laser gain materials have made great progress. Especially the development of Yb-doped Lutetium oxide (Yb:Lu 2 O 3 ) have caught attention due to its beneficial combination of a lower quantum defect, a higher thermal conductivity and a broader emission bandwidth than the well-established gain material Yb-doped Yttrium-Aluminum Garnet (Yb:YAG) [1] .