Optimum fluorescence emission around 1.8 μm for LiYF4 single crystals of various Tm3+-doping concentrations

doi:10.1088/1674-1056/23/10/107806

Abstract In this paper, optical spectra of LiYF₄ single crystals doped with Tm³⁺ ions of various concentrations are reported. The emission intensity at 1.8 μm first increases with increasing Tm³⁺ concentration, and reaches a maximum value when the concentration of Tm³⁺ is about 1.28 mol%, then it decreases rapidly as the concentration of Tm³⁺ further increases to 3.49 mol%. The emission lifetime at 1.8 μm also shows a similar tendency to the emission intensity. The maximum lifetime of 1.8 μm is measured to be 17.68 ms for the sample doped with Tm³⁺ of 1.28 mol%. The emission cross section of ³F₄ level is calculated. The maximum reaches 3.76×10^-21 cm² at 1909 nm. The cross relaxation (³H₆, ³H₄→³F₄,³F₄

Keywords: Tm³⁺-doped LiYF₄ crystal cross relaxation fluorescence emission 1.8 μm

Received: 02 April 2014
Revised: 20 April 2014
Accepted manuscript online:

PACS:	78.60.Lc	(Optically stimulated luminescence)
	78.55.Hx	(Other solid inorganic materials)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 51472125 and 51272109), the Natural Science Foundation of Ningbo City, China (Grant No. 201401A6105016), and K.C. Wong Magna Fund in Ningbo University, China (Grant No. NBUWC001).

Corresponding Authors: Xia Hai-Ping
E-mail: hpxcm@nbu.edu.cn

About author: 78.60.Lc; 78.55.Hx

Cite this article:

Li Shan-Shan (李珊珊), Xia Hai-Ping (夏海平), Fu Li (符立), Dong Yan-Ming (董艳明), Gu Xue-Mei (谷雪梅), Zhang Jian-Li (章践立), Wang Dong-Jie (王冬杰), Zhang Yue-Pin (张约品), Jiang Hao-Chuan (江浩川), Chen Bao-Jiu (陈宝玖) Optimum fluorescence emission around 1.8 μm for LiYF₄ single crystals of various Tm³⁺-doping concentrations 2014 Chin. Phys. B 23 107806


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Optimum fluorescence emission around 1.8 μm for LiYF4 single crystals of various Tm3+-doping concentrations

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Optimum fluorescence emission around 1.8 μm for LiYF₄ single crystals of various Tm³⁺-doping concentrations