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Er3+/Ho3+-Codoped Fluorotellurite Glasses for 2.7 µm Fiber Laser Materials
Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Graduate School of Chinese Academy of Sciences, Beijing 100039, China
These authors contributed equally to this work.
* Author to whom correspondence should be addressed.
Received: 10 July 2013; in revised form: 6 August 2013 / Accepted: 12 August 2013 / Published: 16 August 2013
Abstract: This work reports the enhanced emission at 2.7 µm in Er3+/Ho3+-codoped fluorotellurite glass upon a conventional 980 nm laser diode. The significantly reduced green upconversion and 1.5 µm emission intensity in Er3+/Ho3+-codoped samples are observed. The results suggest that the Er3+: 4I13/2 state can be efficiently depopulated via energy transfer from Er3+ to Ho3+ and the detailed energy transfer mechanisms are discussed qualitatively. The energy transfer efficiency from Er3+: 4I13/2 to Ho3+: 5I7 is calculated to be as high as 67.33%. The calculated emission cross-section in Er3+/Ho3+-codoped fluorotellurite glass is 1.82 × 10−20 cm2. This suggests that Er3+/Ho3+-codoped fluorotellurite glass is a potential material for 2.7 µm fiber laser.
Keywords: 2.7 µm; Er3+/Ho3+-codoped; fluorotellurite glass; energy transfer mechanism
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MDPI and ACS Style
Ma, Y.; Huang, F.; Hu, L.; Zhang, J. Er3+/Ho3+-Codoped Fluorotellurite Glasses for 2.7 µm Fiber Laser Materials. Fibers 2013, 1, 11-20.
Ma Y, Huang F, Hu L, Zhang J. Er3+/Ho3+-Codoped Fluorotellurite Glasses for 2.7 µm Fiber Laser Materials. Fibers. 2013; 1(2):11-20.
Ma, Yaoyao; Huang, Feifei; Hu, Lili; Zhang, Junjie. 2013. "Er3+/Ho3+-Codoped Fluorotellurite Glasses for 2.7 µm Fiber Laser Materials." Fibers 1, no. 2: 11-20.