Fabrication and laser operation of Yb:Lu2O3 transparent ceramics from co-precipitated nano-powders

Year: 2019

Authors: Liu Z., Toci G., Pirri A., Patrizi B., Li JB., Hu ZW., Wei JB., Pan HM., Xie TF., Vannini M., Li J.

Autors Affiliation: Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent Optofunct Inorgan Mat, Shanghai 201899, Peoples R China; Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Technol, Beijing, Peoples R China; CNR, INO, Sesto Fiorentino, Fi, Italy; CNR, IFAC, Sesto Fiorentino, Fi, Italy; CNR, INO, Pisa, Pi, Italy; Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang, Jiangsu, Peoples R China.

Abstract: In this article, 5 at.% Yb:Lu2O3 transparent ceramics were fabricated by vacuum sintering combined with hot isostatic pressing (HIP) posttreatment using co-precipitated nano-powders. The influence of precipitant molar ratio, ammonium hydrogen carbonate, to metal ions (AHC/M3+, R value) on the properties of Yb:Lu2O3 precursors and calcined powders was investigated systematically. It was found that the powders with different R value calcined at 1100 degrees C for 4 hours were pure cubic Lu2O3 but the morphologies of precursors and powders behaved differently. The opaque samples pre-sintered at 1500 degrees C for 2 hours grew into transparent ceramics after HIP posttreatment at 1750 degrees C for 1 hour. The final ceramic with R = 4.8 showed the best optical quality with the in-line transmittance of 79.7% at 1100 nm. The quasi-CW laser operation was performed at 1034 nm and 1080 nm with a maximum output power up to 8.15 W as well as a corresponding slope efficiency of 58.4%.

Journal/Review: JOURNAL OF THE AMERICAN CERAMIC SOCIETY

Volume: 102 (12)      Pages from: 7491  to: 7499

More Information: National Natural Science Foundation of China, Grant/Award Number: 61575212; National Key R&D Program of China, Grant/Award Number: 2017YFB0310500; Chinese Academy of Sciences, Grant/Award Number: QYZDB-SSW-JSC022
KeyWords: co-precipitation method; hot isostatic pressing; laser performance; microstructure; Yb; Lu2O3 transparent ceramics
DOI: 10.1111/jace.16674

Citations: 27
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