Spectroscopic and laser characterization of Yb-0.15:(LuxY1-x)(3)Al5O12 ceramics with different Lu/Y balance

Year: 2016

Authors: Pirri A., Toci G., Li J., Xie T., Pan Y., Babin V., Beitlerova A., Nikl M., Vannini M.

Autors Affiliation: CNR, Ist Fis Applicata Nello Carrara, IFAC CNR, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, FI, Italy; CNR, Ist Nazl Ott, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, FI, Italy; Chinese Acad Sci, Key Lab Transparent & Optofunct Adv Inorgan Mat, Shanghai Inst Ceram, 1295 Dingxi Rd, Shanghai 200050, Peoples R China; Inst Phys Acad Sci Czech Republ, Cukrovarnicka 10, Prague 16253, Czech Republic.

Abstract: We report a broad comparative analysis of the spectroscopic and laser properties of solid solution Lutetium-Yttrium Aluminum Garnet (LuYAG, (LuxY1-x)3Al5O12) ceramics doped with Yb. The investigation was mainly aimed to assess the impact of the Lu/Y ratio on the Yb optical and laser properties. Therefore we analyzed a set of samples with different Y/Lu balance, namely 25/75, 50/50 and 75/25, with 15% Yb doping. We found that the Yb absorption and emission spectra changed from YAG to LuAG when gradually increasing in Lu content. Regarding the laser emission, remarkable results were achieved with all samples. Maximum output power was 8.2 W, 7.3 W and 8.7 W for Y/Lu balance 25/75, 50/50 and 75/25 respectively, at 1030 nm; the slope efficiency and the optical-to-optical efficiencies approached or exceeded 60% and 50% respectively. The tuning range was investigated using an intracavity ZnSe prism. The broadest tuning range (998 nm to 1063 nm) was obtained with Y/Lu balance 75/25, whereas the emission of the other two samples extended from 1000 nm to 1058 nm. To the best of our knowledge, this is the first comparative analysis of Yb:LuYAG ceramics or crystals as laser host across such a broad range of Y/Lu ratios.

Journal/Review: OPTICS EXPRESS

Volume: 24 (16)      Pages from: 17832  to: 17842

More Information: Activity supported by CNR-AVCR Joint Project 2013-2015 “Influence of composition and defects on the properties of transparent ceramics and crystals for laser and scintillator applications”. This work was also partially supported by the National Natural Science Foundation of China (Grant No. 61575212) and Chinese Academy of Sciences Visiting Professor for Senior International Scientists (Grant No. 2013T2G0004).
KeyWords: Ceramic materials; Efficiency; Emission spectroscopy; II-VI semiconductors; Selenium compounds; Ytterbium; Yttrium aluminum garnet; Zinc compounds, Absorption and emission spectra; Comparative analysis; Laser characterization; Laser emission; Laser property; Maximum output power; Optical-to-optical efficiency; Slope efficiencies, Spectroscopic analysis
DOI: 10.1364/OE.24.017832

Citations: 17
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