Er3 -Ho3 -Codoped Fluorotellurite Glasses for 2.7 µm Fiber Laser MaterialsReportar como inadecuado




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1

Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

2

Graduate School of Chinese Academy of Sciences, Beijing 100039, China



These authors contributed equally to this work.





*

Author to whom correspondence should be addressed.



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. View Full-Text

Keywords: 2.7 µm; Er3+-Ho3+-codoped; fluorotellurite glass; energy transfer mechanism 2.7 µm; Er3+-Ho3+-codoped; fluorotellurite glass; energy transfer mechanism





Autor: Yaoyao Ma 1,2, Feifei Huang 1,2,†, Lili Hu 1,† and Junjie Zhang 1,*

Fuente: http://mdpi.com/



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