Enhanced emission of Tm3+:F-3(4) -> H-3(6) transition by backward energy transfer from Yb3+ in Y2O3 for mid-infrared applications

	Enhanced emission of Tm3+:F-3(4) -> H-3(6) transition by backward energy transfer from Yb3+ in Y2O3 for mid-infrared applications
	Wu, D.; W. G. Xiao; X. Zhang; Z. D. Hao; G. H. Pan; L. L. Zhang; Y. S. Luo and J. H. Zhang
	2017
发表期刊	Journal of Alloys and Compounds
卷号	722
摘要	Tm3+ doped luminescence materials have attracted great attention owing to their potential for achieving 2 mm laser. Here, we report that the 2 mm emission intensity of Tm3+:F-3(4) -> H-3(6) transition can be enhanced by as large as 1.8 times through introducing Yb3+ into Tm3+ doped Y2O3 upon 782 nm excitation, where the population of Tm3+: F-3(4) level is increased by backward energy transfer from Yb3+ following the forward energy transfer from the upper level Tm3+: H-3(4) to an intermediate level Yb3+: F-2(5/2). In addition, the efficiencies of Yb3+ to Tm3+ backward energy transfer are determined based on the analysis of emission spectra and fluorescence time profiles. It is found that the Yb3+ to Tm3+ backward energy transfer upon Tm3+ excitation at 782 nm is more efficient than the Yb3+ to Tm3+ energy transfer upon Yb3+ direct excitation at 980 nm, which is explained by the preferential excitation of Yb3+ with a nearby Tm3+ in the forward energy transfer from Tm3+ to Yb3+ upon Tm3+ excitation. Our results demonstrate that codoping Yb3+ into Tm3+ activated materials offers a promising approach to obtain efficient 2 mm laser, and the efficient backward energy transfer may play a key role in other rare earth ions doped luminescence materials. (C) 2017 Elsevier B.V. All rights reserved.
收录类别	sci ; ei
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/59318
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wu, D.,W. G. Xiao,X. Zhang,et al. Enhanced emission of Tm3+:F-3(4) -> H-3(6) transition by backward energy transfer from Yb3+ in Y2O3 for mid-infrared applications[J]. Journal of Alloys and Compounds,2017,722.
APA	Wu, D..,W. G. Xiao.,X. Zhang.,Z. D. Hao.,G. H. Pan.,...&Y. S. Luo and J. H. Zhang.(2017).Enhanced emission of Tm3+:F-3(4) -> H-3(6) transition by backward energy transfer from Yb3+ in Y2O3 for mid-infrared applications.Journal of Alloys and Compounds,722.
MLA	Wu, D.,et al."Enhanced emission of Tm3+:F-3(4) -> H-3(6) transition by backward energy transfer from Yb3+ in Y2O3 for mid-infrared applications".Journal of Alloys and Compounds 722(2017).

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