Fabrication, microstructure, and optical properties of Tm:Y3ScAl4O12 laser ceramics

Year: 2020

Authors: Feng YG., Toci GD., 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 Academy of Sciences; Shanghai Institute of Ceramics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Consiglio Nazionale delle Ricerche (CNR); Istituto Nazionale di Ottica (INO-CNR); Consiglio Nazionale delle Ricerche (CNR); Istituto di Fisica Applicata Nello Carrara (IFAC-CNR); Jiangsu University

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

More Information: National Natural Science Foundation of China, Grant/Award Number: 61575212; National Key R&D Program of China, Grant/Award Number: 2017YFB0310500; Key Research Project of the Frontier Science of the Chinese Academy of Sciences, Grant/Award Number: QYZDB-SSW-JSC022
KeyWords: microstructure; optical properties; Tm; YSAG; transparent ceramics
DOI: 10.1111/jace.16873

Citations: 20
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