Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13054
Title: Efficient 2.7 micron emission from Er3+/Pr3+ codoped oxyfluorotellurite glass
Authors: Bai, G
Ding, J
Tao, L
Li, K
Hu, L
Tsang, YH 
Keywords: 2.7 micron emission
Oxyfluorotellurite glass
Rare earths
Er
Issue Date: 2012
Publisher: Elsevier Science Bv
Source: Journal of non-crystalline solids, 2012, v. 358, no. 23, p. 3403-3406 How to cite?
Journal: Journal of Non-Crystalline Solids 
Abstract: 2.7 mu m emission from the Er3+ and Er3+/Pr3+ ions doped oxyfluorotellurite glasses was detected when pumped with a 980 nm laser diode and their results were compared. It is found that 2.7 mu m emission from Er3+ is enhanced by codoped with Pr3+ in the oxyfluoride tellurite glass. The emission characteristic at 2.7 mu m and energy transfer (ET) have been investigated. The fabricated glass possesses a larger calculated emission cross section (1.01 x 10(-20) cm(2)) along with a higher spontaneous transition probability (60.92 s(-1)) corresponding to the Er3+:I-4(11/2) -> I-4(13/2) transition. Additionally, large ET efficiency of 85% indicates the more efficient ET process from Er3+ to Pr3+ (Er3+:I-4(13/2) + Pr3+:H-3(4) -> Er3+:I-4(15/2) + Pr3+:F-3(3)). Therefore, codoping with Pr3+ ions can further improve the 2.7 mu m emission of Er3+ via ET and the investigation of the materials in this study could help to find potential application of 2.7 mu m laser.
URI: http://hdl.handle.net/10397/13054
ISSN: 0022-3093
DOI: 10.1016/j.jnoncrysol.2012.08.016
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