Efficient 3.5 μm mid-infrared emission in heavily Er3+-doped fluoroaluminate glasses and its emission mechanism

被引：0
|
作者：
Zhang, Jiquan [1 ]
Wang, Ruicong [1 ]
Wang, Xin [1 ]
Li, Wenhao [1 ]
Liu, Mo [1 ]
Jia, Shijie [1 ]
Wang, Lijun [2 ]
Ning, Yongqiang [2 ]
Peng, Hangyu [2 ]
Brambilla, Gilberto [3 ]
Wang, Shunbin [1 ]
Wang, Pengfei [1 ,4 ]
机构：
[1] Key Lab of In-Fiber Integrated Optics of Ministry of Education of China, Harbin Engineering University, Harbin,150001, China
[2] State Key Laboratory of Luminescence and Application, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun,130033, China
[3] Optoelectronics Research Centre, University of Southampton, Southampton,SO17 1BJ, United Kingdom
[4] Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen,518060, China
来源：
Journal of Luminescence | 2021年 / 238卷
基金：
中国国家自然科学基金;
关键词：
3.5 μm emission - Doped sample - Emission mechanism - Er3+-doped - Fluorescence properties - Fluoroaluminate glass - Laser diode pumping - Melt quenching method - Mid-infrared emission - Mid-infrared fluorescence;
D O I：
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学科分类号：
摘要：
Er3+-doped fluoroaluminate glasses with different concentrations were prepared by using melt-quenching method. Under a 638 nm laser diode pumping, efficient 3.5 μm emission was observed in the 18 mol% Er3+ doped sample, which was ascribed to the Er3+: 4F9/2 → 4I9/2 transition. The fluorescence properties such as radiative transition probability, energy level lifetime and branch ratio were predicted by the well-known Judd-Ofelt theory, while the emission and absorption cross-sections were calculated using the Füchtbauer-Ladenburg and McCumber theories, respectively. Both simulated and experimental results show that Er3+-doped fluoroaluminate material is a promising gain medium for 3.5 μm laser applications. © 2021 Elsevier B.V.
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