An in depth characterization of the spectroscopic properties and laser action of 10 at% Yb doped Y3ScxAl5-xO12 (x=0.25, 0.5, 1.0, 1.5) transparent

Year: 2020

Authors: Toci G., Pirri A., Patrizi B., Feng YG-. Xie TF., Yang ZX., Li J., Vannini M.

Autors Affiliation: CNR INO, Consiglio Nazl Ric, Ist Nazl Ott, Via Madonna Piano 10C, I-50019 Florence, Italy;‎ CNR IFAC, Consiglio Nazl Ric, Ist Fis Applicata Carrara, Via Madonna Piano 10C, I-50019 Florence, Italy;‎ 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 100049, Peoples R China

Abstract: We report on the spectroscopic and laser emission properties of 10 at% Yb:Y3ScxAl5-xO12 (Yb:YSAG) ceramic varying the amount of Sc (x) ranging from x = 0.25 to x = 1.5. The samples were fabricated by a solid state reaction method followed by vacuum sintering and annealing in air. The spectroscopic investigation has evidenced an increased broadening in both the absorption and the emission spectra for increasing Sc content, as well as an extension of lifetime at increased Sc content. Concerning the laser performance, the maximum slope efficiency, i.e. 76.6%, was obtained with the sample with x = 0.25 while the largest tuning range, i.e. 81 nm, with the sample having the highest concentration of Sc ions (x = 1.5); a steady broadening in the tuning bandwidth for increasing Scandium content was measured.


Volume: 46 (11)      Pages from: 17252  to: 17260

More Information: This work was supported by the National Key R&D Program of China (Grant No. 2017YFB0310500); the National Natural Science Foundation of China (Grant No. 61575212); the Key research project of the frontier science of the Chinese Academy of Sciences (No. QYZDB-SSW-JSC022); the CNR Short Term Mobility Program 2017 (Prot. No. 0071950/2017), and the CNR-CAS bilateral program 2020-2022 (Prot. No. 0021166/2020).
We thank Mr. Mauro Pucci, optical technician at CNR-INO, for the high-quality polishing of some of the ceramic samples used in the laser experiments and for the fabrication of the ZnSe prism used in the tuning measurements.
KeyWords: Yb:YSAG; Spectroscopy; Optical properties; Disordered garnets
DOI: 10.1016/j.ceramint.2020.04.012

Citations: 7
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