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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.
UV-C Luminescence of a Modified Zircon Silicate Framework upon Cathode Ray and VUV Excitation
(2018)
Plasmadisplays, Bildschirmtechnologie für das 21. Jahrhundert, Universität Bochum, 18. Juli 2001
(2001)
Phenanthroline chromophore as efficient antenna for Tb3+ green luminescence: A theoretical study
(2021)
Optical Materials, Options and Opportunities, Philips Research Laboratories Aachen, 04. Februar 2009
(2009)
Optical Characterisation
(2020)