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Proceedings Paper

First laser operation and spectroscopic characterization of mixed garnet Yb:LuYAG ceramics
Author(s): Guido Toci; Angela Pirri; Jiang Li; Tengfei Xie; Yubai Pan; Martin Nikl; Vladimir Babin; Alena Beitlerová; Matteo Vannini
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Paper Abstract

We present the optical and spectroscopic characterization and the first example of laser operation of Yb doped LuYAG ceramics, with two different compositions, namely (Lu0.25Y0.75)3Al5O12 and (Lu0.50Y0.50)3Al5O12, both with 15% Yb doping. Ceramic samples were prepared by reactive sintering from high purity α-Al2O3, Lu2O3, Y2O3, Yb2O3 powders using Tetraethoxysilane (TEOS) and MgO as sintering aids. After ball milling, the slurry was dried, uniaxially pressed into 20 mm diameter pellets at 20 MPa, and then cold isostatically pressed at 200 MPa. Sintering was conducted at 1850°C for 30 h under vacuum, followed by annealing in air (1500 °C, 10 h) to remove the oxygen vacancies. Laser tests were carried out in a laser cavity end pumped by a fiber coupled diode laser emitting at 936 nm. A slope efficiency as high as 65.2% with a maximum output power of 8.7 W (in quasi-CW pumping conditions) was obtained from the sample with composition (Lu0.25Y0.75)3Al5O12, whereas the sample with composition (Lu0.50Y0.50)3Al5O12 had a maximum slope efficiency of 49.5% (due to the higher scattering losses), and 6.7 W of maximum output power. Furthermore we characterized the tuning range of the two samples.

Paper Details

Date Published: 16 March 2016
PDF: 8 pages
Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 97261N (16 March 2016); doi: 10.1117/12.2209558
Show Author Affiliations
Guido Toci, Istituto Nazionale di Ottica (Italy)
Angela Pirri, Istituto di Fisica Applicata "Nello Carrara" (Italy)
Jiang Li, Shanghai Institute of Ceramics (China)
Tengfei Xie, Shanghai Institute of Ceramics (China)
Yubai Pan, Shanghai Institute of Ceramics (China)
Martin Nikl, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Vladimir Babin, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Alena Beitlerová, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Matteo Vannini, Istituto Nazionale di Ottica (Italy)

Published in SPIE Proceedings Vol. 9726:
Solid State Lasers XXV: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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