Yb3+:(LuxY1-x)2O3 mixed sesquioxide ceramics for laser applications. Part II: Laser performances
Year: 2021
Authors: Toci G.; Pirri A.; Patrizi B.; Maksimov R.N.; Osipov V.V.; Shitov V.A.; Vannini M
Autors Affiliation: Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche, INO-CNR, Via Madonna del Piano 10C, Sesto Fiorentino (FI), 50019, Italy; Istituto di Fisica Applicata “”N. Carrara””, Consiglio Nazionale delle Ricerche, IFAC-CNR, Via Madonna del Piano 10C, Sesto Fiorentino (FI), 50019, Italy; Institute of Electrophysics UrB RAS, Amundsen St. 106, Ekaterinburg, 620016, Russian Federation
Abstract: We studied the laser performances of a new family of Yb3+-doped mixed sesquioxide ceramics, (LuxY1-x)2O3 with x = 0.113 and 0.232, fabricated by vacuum sintering of nano-sized particles synthesized by CO2 laser co-evaporation of solid targets with different Y/Lu balance. Their microstructural and spectroscopic properties were reported in details in a companion paper. We report the results of the laser emission performances (slope efficiency, output power and tuning range) under semiconductor laser pumping. A comparison of the performance with a 5.6 at% Yb:Y2O3 ceramics fabricated with the same method is reported. A maximum slope efficiency of 68.1% was obtained in quasi-CW emission regime from the sample with x = 0.113, with a wavelength tunability range from 994 to 1089 nm full width (i.e. 95 nm). Moreover, from the sample with Yb:Y2O3 composition we obtained a maximum slope efficiency of 74% (optical conversion efficiency 68.3%), among the highest ever reported for ceramic Yb:Y2O3. This is the first extensive characterization of the laser performances of the Yb:(Y,Lu)2O3 composition in ceramic hosts.
Journal/Review: JOURNAL OF ALLOYS AND COMPOUNDS
Volume: 853 Pages from: 156943-1 to: 156943-8
KeyWords: Yb:(Lu, Y)(2)O-3; Transparent ceramics; Microstructure; Lasers; NanoparticlesDOI: 10.1016/j.jallcom.2020.156943