High concentration Tm3+ doped TeO2-Al2O3-BaF2 glass for ~ 2 µm fiber lasers

• Published in: Journal of alloys and compounds Vol. 901; p. 163592
• Main Authors: Zhang, Chi, Han, Kexuan, Zhou, Dechun, Song, Chunlai, Xu, Pengfei, Wu, Tong, Huang, Chenquan, Qiang, Sheng, Wu, Qirun
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 25.04.2022; Elsevier BV
• Subjects: 2 µm emission; Absorption; Aluminum oxide; Barium fluorides; Energy levels; Energy transfer; Energy transfer mechanism; Fiber lasers; Fluorescence; Fluorotellurate glass; High concentration doping; High temperature; Lasers; Luminescence; Mathematical analysis; Microscopic parameters; Optical fibers; Optical properties; Parameters; Raman spectra; Tellurium dioxide; Thermal stability; Thermodynamic properties; Transition probabilities; 2 µm emission; Fluorotellurate glass; High concentration doping; Energy transfer mechanism; Microscopic parameters

•High concentration of Tm3+ ion doped fluorotellurate glass was prepared.•The TeO2-Al2O3-BaF2 glasses are activated with Tm3+.•A large emission cross section (9.50 × 10−21 cm−2) in the ~ 2 µm band was achieved by modulating the Tm3+ doping concentration.•By analyzing the energy transfer mechanism, t...