Fabrication, microstructure, and optical properties of Tm:Y3ScAl4O12 laser ceramics
Authors: Feng YG., Toci G., Patrizi B., Pirri A., Hu ZW., Chen XP., Wei JB., Pan HM., Li XY., Zhang X., 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; CNR, IFAC, Sesto Fiorentino, Fi, Italy; Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang, Jiangsu, Peoples R China
Abstract: Transparent 4 at.% Tm:Y3ScAl4O12 (Tm:YSAG) laser ceramics were fabricated by solid-state reaction combined with vacuum sintering method. The 4 at.% Tm:YSAG ceramic sample sintered at 1800 degrees C for 30 hours possesses homogenous microstructure and excellent optical properties, showing a transmittance of 79.3% at 2000 nm. The absorption and emission spectra of the Tm:YSAG ceramics are studied and compared with those of 4 at.% Tm:Y3Al5O12 ceramics. The introduction of Sc3+ greatly affects the energy levels of the Tm3+, causing the disappearance and degeneration of some absorption and emission peaks in the middle infrared region. The laser performance of the 4 at.% Tm:YSAG ceramics is also tested in the Quasi-continuous-wave (QCW) mode by pumping with a 790 nm laser diode (LD). A maximum laser output power of 0.54 W with a slope efficiency of 4.8% is achieved, which is the first laser output for Tm:YSAG ceramics.
Journal/Review: JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume: 103 (3) Pages from: 1819 to: 1830
KeyWords: microstructure; optical properties; Tm; YSAG; transparent ceramicsDOI: 10.1111/jace.16873Citations: 9data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-12-05References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here