TY  - JOUR
A1  - Loiko, Pavel
A1  - Rytz, Daniel
A1  - Schwung, Sebastian
A1  - Pues, Patrick
A1  - Jüstel, Thomas
A1  - Doualan, Jean-Louis
A1  - Camy, Patrice
T1  - Watt-level europium laser at 703 nm
JF  - Optics letters
N2  - 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.
Y1  - 2021
U6  - http://dx.doi.org/10.1364/OL.428706
VL  - 46
SP  - 2702
EP  - 2705
ER  -