Investigation of Tm3+/Yb3+ co-doped germanate-tellurite glasses for efficient 2 µm mid-infrared laser materials

Aoju Dou (1) , Lingling Shen (1) , Ning Wang (1) , Yangjian Cai (1) , Muzhi Cai (1, 2) , Yanyan Guo (3) , Feifei Huang (1) , Ying Tian (1) , Shiqing Xu (1) , Junjie Zhang (1)

1 CJLU - China Jiliang University
2 ISCR - Institut des Sciences Chimiques de Rennes
3 Changchun University of Science and Technology

The Tm3+/Yb3+ co-doped germanate-tellurite glasses with good thermal properties were prepared. Based on the absorption spectra and the Judd-Ofelt theory, the J-O intensity parameters (Omega), radiative transition probability (276.78 s(-1)), fluorescence lifetime (3.89 ms), absorption and emission cross sections (sigma(e)=1.35 x 10(-20) cm(2)) were calculated. The similar to 2 mu m mid-infrared emission resulting from the F-3(4) -> H-3(6) transition of Tm3+ sensitized by Yb3+ was observed pumped by 980 nm LD. Besides, the energy transfer mechanism between Yb3+ and Tm3+ was thoroughly discussed. The measured similar to 2 mu m emission lifetime of Tm3+/Yb3+ co-doped glass can reach as high as 2.38 ms. The above results showed that Tm3+/Yb3+ co-doping glass could be expected to be a promising material to achieve high efficient similar to 2 mu m lasing with a 980 nm LD pumping.

Domains: Physics [physics]; Condensed Matter [cond-mat]; Materials Science [cond-mat.mtrl-sci]; Physics [physics]; Physics [physics]; Optics [physics.optics]

Aoju Dou, Lingling Shen, Ning Wang, Yangjian Cai, Muzhi Cai, et al.. Investigation of Tm3+/Yb3+ co-doped germanate-tellurite glasses for efficient 2 µm mid-infrared laser materials. Applied Physics B - Laser and Optics, 2018, 124 (5), pp.86. ⟨10.1007/s00340-018-6957-2⟩. ⟨hal-01807076⟩