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High efficiency laser action in mildly doped Yb:LuYAG ceramics

  Articoli su Riviste JCR/ISI  (anno 2017)

Autori:  Pirri A., Toci G., Li J., Xie T., Pan Y., Babin V., Beitlerova A., Nikl M., Vannini M

Affiliazione Autori:  C.N.R. - National Research Council, Istituto di Fisica Applicata “Nello Carrara”, Via Madonna del Piano 10, Sesto Fiorentino, FI I-50019, Italy; C.N.R. - National Research Council, Istituto Nazionale di Ottica, Via Madonna del Piano 10, Sesto Fiorentino, FI I-50019, Italy; Key Laboratory of Transparent and Opto-functional Advanced Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, China; Institute of Physics Academy of Sciences of the Czech Republic, Cukrovarnicka 10, Prague, 162 53, Czech Republic

Riassunto:  We report the first laser oscillations of 5 at%, 10 at% and 20 at% Yb3+ doped LuYAG ceramic samples and their spectroscopic characterization. The maximum output power, 8.7 W at 1029 nm, is achieved by 10 at% sample. A slope efficiency as high as 90.1% is obtained from the 10 at% doped sample. To our knowledge, these are the highest laser slope efficiencies obtained so far for Yb3+ doped LuYAG ceramics. With the 20 at% doped ceramic the maximum output power was 7.2 W at 1047.6 nm with a corresponding slope efficiency of 47.4%, whereas a decrease of the output power is observed for absorbed pump power higher than 15.6 W, probably due to the appearance of a non-linear loss mechanism. Finally, we explored the tunability of the ceramics finding the broadest continuous tuning range (from 992 nm to 1060 nm, i.e. 68 nm), with 5 at% and 10 at%, while it decreases to 54 nm with 20 at%.

Rivista/Giornale:  OPTICAL MATERIALS
Volume n.:  73      Pagine da: 312  a: 318
Ulteriori informazioni:  This work was partially supported by CNR-AVCR Joint Project 2013–2015 “Influence of composition and defects on the properties of transparent ceramics and crystals for laser and scintillator applications”; by the National Natural Science Foundation of China (Grant No. 61575212 ); by the key research project of the frontier science of the Chinese Academy of Sciences (Grant No. QYZDB-SSW-JSC022 ) and by the project “ Chinese Academy of Sciences Visiting Professor for Senior International Scientists” (Grant No. 2013T2G0004 ).
DOI: 10.1016/j.optmat.2017.08.031

*Impact Factor della Rivista: (2017) 2.320   *Citazioni: 3
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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