title: Efficient diode-pumped laser operation of Tm:Lu2O3 around 2 μm.
abstract: We report on the first diode-pumped laser operation of thulium-doped Lu2O3. With a very compact setup an output power of 75 W and slope efficiencies of around 40% with respect to the incident pump power were achieved at room temperature. Free running laser operation was observed at wavelengths of 2065 nm and 1965 nm. With a birefringent filter the wavelength could continuously be tuned from 1922 nm to 2134 nm. The thermal conductivity of Tm:Lu2O3 was measured for different dopant concentrations and is compared to the one of thulium-doped YAG.
authors.affiliation: Institute of Laser-Physics, University of Hamburg, Hamburg, Germany. philipp.koopmann@physnet.uni‐hamburg.de
authors.forename: Philipp
authors.initials: P
authors.lastname: Koopmann
authors.forename: Samir
authors.initials: S
authors.lastname: Lamrini
authors.forename: Karsten
authors.initials: K
authors.lastname: Scholle
authors.forename: Peter
authors.initials: P
authors.lastname: Fuhrberg
authors.forename: Klaus
authors.initials: K
authors.lastname: Petermann
authors.forename: Günter
authors.initials: G
authors.lastname: Huber
mesh_terms: D000042:Absorption; D053844:Lasers, Solid-State; D008187:Lutetium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D013057:Spectrum Analysis; D013696:Temperature; D013814:Thermal Conductivity; D013932:Thulium / Q000737:chemistry*
chemical_list: D010087:Oxides; D008187:Lutetium; D013932:Thulium