Fabrication, microstructure, and optical properties of Yb:Y3ScAl4O12 transparent ceramics with different doping levels

Year: 2020

Authors: Feng YG., Toci G., Pirri A., Patrizi B., Hu ZW., Wei JB., Pan HM., Zhang X., Li XY., Su S., 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 Engn, Beijing, Peoples R China; CNR, INO, Sesto Fiorentino, FI, Italy; IFAC, CNR, Sesto Fiorentino, FI, Italy; CNR, INO, Pisa, Italy; Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang, Jiangsu, Peoples R China.

Abstract: Transparent Yb:Y3ScAl4O12 (Yb:YSAG) ceramics with different ytterbium doping concentrations such as 5, 10, 15, 20 at.% have been successfully fabricated by solid-state reactive sintering. All the obtained ceramics are in dense and homogeneous structure after sintering at 1820 degrees C for 30 hours and with a posttreatment by hot isostatic pressing at 1750 degrees C for 3 hours with 200 MPa pressure. We systematically analyzed the influence of Yb3+ doping concentration on the microstructure and optical properties of the ceramics. The 10 at.% Yb:Y3ScAl4O12 ceramics with a thickness of 3.2 mm show the best transparency as high as 80.9% at 1100 nm. The laser emission of the 10 at.% Yb:YSAG ceramics was tested, resulting in a maximum slope efficiency of 67.6% and a maximum output power of 11.3 W under quasi-continuous wave pump conditions. The tuning range spanned from 990 to 1071 nm.

Journal/Review: JOURNAL OF THE AMERICAN CERAMIC SOCIETY

Volume: 103 (1)      Pages from: 224  to: 234

KeyWords: optical properties; transparent ceramics; Yb; Y3ScAl4O12 (Yb; YSAG); ytterbium concentration
DOI: 10.1111/jace.16691

Citations: 18
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