@article{LoikoRytzSchwungetal.2021, author = {Loiko, Pavel and Rytz, Daniel and Schwung, Sebastian and Pues, Patrick and J{\"u}stel, Thomas and Doualan, Jean-Louis and Camy, Patrice}, title = {Watt-level europium laser at 703 nm}, series = {Optics letters}, volume = {46}, journal = {Optics letters}, doi = {10.1364/OL.428706}, pages = {2702 -- 2705}, year = {2021}, abstract = {We report on a watt-level highly efficient europium laser operating at the 5D0→7F4 transition. It is based on the stoichiometric KEu(WO4)2 crystal. Under pumping by a green laser at 532.1 nm, the KEu(WO4)2 laser generated a maximum peak output power of 1.11 W at ∼703nm with a slope efficiency of 43.2\% and a linear polarization (????‖????????). A laser threshold as low as 64 mW was achieved. True continuous-wave operation was demonstrated. The polarized emission properties of monoclinic KEu(WO4)2 were determined.}, language = {en} }