1. Dy3+-doped Ga–Sb–S chalcogenide glasses for mid-infrared lasers.
- Author
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Zhang, Mingjie, Yang, Anping, Peng, Yuefeng, Zhang, Bin, Ren, He, Guo, Wei, Yang, Yan, Zhai, Chengcheng, Wang, Yuwei, Yang, Zhiyong, and Tang, Dingyuan
- Subjects
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DYSPROSIUM , *METAL ions , *DOPING agents (Chemistry) , *GALLIUM compounds , *CHALCOGENIDE glass , *INFRARED radiation - Abstract
Novel Ga–Sb–S chalcogenide glasses doped with different amount of Dy 3+ ions were prepared. Their thermal stability, optical properties, and mid-infrared (MIR) emission properties were investigated. The glasses show good thermal stability, excellent infrared transparency, very low phonon energy (∼306 cm −1 ), and intense emissions centered at 2.95, 3.59, 4.17 and 4.40 μm. Three Judd–Ofelt intensity parameters (Ω 2 = 8.51 × 10 −20 cm 2 , Ω 4 = 2.09 × 10 −20 cm 2 , and Ω 6 = 1.60 × 10 −20 cm 2 ) are obtained, and the related radiative transition properties are evaluated. The high quantum efficiencies and large stimulated emission cross sections of the MIR emissions (88.10% and 1.11 × 10 −20 cm 2 for 2.95 μm emission, 75.90% and 0.38 × 10 −20 cm 2 for 4.40 μm emission, respectively) in the Dy 3+ -doped Ga–Sb–S glasses make them promising gain materials for the MIR lasers. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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