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Open AccessArticle

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

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Istituto di Fisica Applicata “Carrara”, IFAC, Consiglio Nazionale delle Ricerche, CNR, Via Madonna del Piano 10C, 50019 Sesto Fiorentino (Fi), Italy
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Istituto Nazionale di Ottica, INO, Consiglio Nazionale delle Ricerche, CNR, Via Madonna del Piano 10C, 50019 Sesto Fiorentino (Fi), Italy
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Key Laboratory of Transparent and Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
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Istituto Nazionale di Ottica, INO, Consiglio Nazionale delle Ricerche, CNR, Via G. Moruzzi 1, 56124 Pisa, Italy
*
Author to whom correspondence should be addressed.
Materials 2018, 11(5), 837; https://doi.org/10.3390/ma11050837
Received: 5 April 2018 / Revised: 26 April 2018 / Accepted: 11 May 2018 / Published: 18 May 2018
(This article belongs to the Special Issue Transparent Ceramics and Applications)
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 (ηs) of 67.8%. In continuous wave regime instead, the maximum output power was 5 W with ηs = 52.7%. The laser emission wavelengths in free running were λL = 1051 nm and λL = 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. View Full-Text
Keywords: transparent laser ceramic; ytterbium-doped laser ceramics; diode-pumped solid-state laser; tunable laser cavity transparent laser ceramic; ytterbium-doped laser ceramics; diode-pumped solid-state laser; tunable laser cavity
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MDPI and ACS Style

Pirri, A.; Toci, G.; Li, J.; Feng, Y.; Xie, T.; Yang, Z.; Patrizi, B.; Vannini, M. A Comprehensive Characterization of a 10 at.% Yb:YSAG Laser Ceramic Sample. Materials 2018, 11, 837.

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