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: CNR, Ist Nazl Ott, INO CNR, Via Madonna del Piano 10C, I-50019 Sesto Fiorentino, FI, Italy; CNR, Ist Fis Applicata N Carrara, IFAC CNR, Via Madonna del Piano 10C, I-50019 Sesto Fiorentino, FI, Italy; Inst Electrophys UrB RAS, Amundsen St 106, Ekaterinburg 620016, Russia; Ural Fed Univ, Mira St 19, Ekaterinburg 620002, Russia.

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; Nanoparticles
DOI: 10.1016/j.jallcom.2020.156943

Citations: 18
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