A Comprehensive Characterization of a 10 at.% Yb: YSAG Laser Ceramic Sample

Year: 2018

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

Autors Affiliation: CNR, IFAC, Via Madonna del Piano 10C, I-50019 Sesto Fiorentino, Fi, Italy; CNR, INO, Via Madonna del Piano 10C, I-50019 Sesto Fiorentino, Fi, Italy; Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 201899, Peoples R China; CNR, INO, Via G Moruzzi 1, I-56124 Pisa, Italy.

Abstract: We report a comprehensive characterization of a 10 at.% Yb3+-doped YSAG (Yb:Y3ScxAl(5-x)O12, x = 1.5) ceramic, including microstructural, spectroscopic and laser properties. Moreover, we illustrate and discuss the fabrication technique. Yb3+ in YSAG features a broader absorption and emission band than in traditional YAG, which is advantageous for laser applications (i.e., tunable laser sources, ultrafast pulse generation). Pumping in a quasi continuous wave regime at 936 nm, the ceramic has shown good laser performance as the maximum output power was 6.3 W with a corresponding slope efficiency (eta(s)) of 67.8%. In continuous wave regime instead, the maximum output power was 5 W with eta(s) = 52.7%. The laser emission wavelengths in free running were lambda(L) = 1051 nm and lambda(L) = 1031 nm, depending on the output coupler transmission. Finally, by a tunable cavity we obtained laser emission spanning from 991.5 to 1073 nm, i.e., 81.5 nm, which is the broadest tuning range ever reported for this material, to the best of our knowledge.

Journal/Review: MATERIALS

Volume: 11 (5)      Pages from: 837-1  to: 837-9

More Information: This activity was partially supported by the CNR Short Term Mobility Program 2017 (Prot. No. 0071950/2017), 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) and the National Key R&D Program of China (Grant No. 2017YFB0310500).
KeyWords: Diode-pumped solid-state laser; Tunable laser cavity; Ceramic materials; Laser applications; Laser tuning; Lasers; Solid state lasers; Yttrium aluminum garnet, Absorption and emissions; Diode pumped solid state laser; Fabrication technique; Quasi-continuous waves; Transparent laser ceramics; Tunable laser sources; Ultra-fast pulse generation; Ytterbium-doped laser, Pumping (laser)
DOI: 10.3390/ma11050837

Citations: 16
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