Enhanced mid-infrared emissions of Er3+ at 2.7 μm via Nd3+ sensitization in chalcohalide glass

Nd(3+) sensitized Er(3+):(4)I(13/2) mid-IR emissions around 2.7 μm were investigated in the transparent Ga(2)S(3)-GeS(2)-CsCl chalcohalide glasses for the first time. Remarkably, it is found that Nd(3+) greatly enhances Er(3+) 2.7 μm emission by a maximal 20 times, and depopulates the lower level of...

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Bibliographic Details
Published inOptics letters Vol. 36; no. 10; p. 1815
Main Authors Lin, Hang, Chen, Daqin, Yu, Yunlong, Yang, Anping, Wang, Yuansheng
Format Journal Article
LanguageEnglish
Published United States 15.05.2011
Subjects
Chalcogens - chemistry
Energy Transfer
Erbium - chemistry
Glass - chemistry
Halogens - chemistry
Neodymium - chemistry
Spectrophotometry, Infrared
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Summary:Nd(3+) sensitized Er(3+):(4)I(13/2) mid-IR emissions around 2.7 μm were investigated in the transparent Ga(2)S(3)-GeS(2)-CsCl chalcohalide glasses for the first time. Remarkably, it is found that Nd(3+) greatly enhances Er(3+) 2.7 μm emission by a maximal 20 times, and depopulates the lower level of Er(3+):(4)I(13/2) for population inversion. Based on Judd-Ofelt theory, the 2.7 μm emission cross section is calculated (as high as 0.66×10(-20) cm(2)) and the gain property of the Er(3+):(4)I(11/2)→(4)I(13/2) transition is discussed. Hopefully, the materials studied here may find potential applications in the fields of fiber amplifiers and mid-IR lasers.
ISSN:1539-4794
DOI:10.1364/OL.36.001815