Luminescent properties of Tm3+/ Ho3+ co-doped LiYF4 crystals

被引：4

作者：

Li S.-S. ^{[1
]}

Xia H.-P. ^{[1
]}

Dong Y.-M. ^{[1
]}

Fu L. ^{[1
]}

Gu X.-M. ^{[1
]}

Zhang J.-L. ^{[1
]}

Wang D.-J. ^{[1
]}

Jiang H.-C. ^{[2
]}

Chen B.-J. ^{[3
]}

机构：

[1] Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo

[2] Department of Physics, Dalian Maritime University, Dalian

[3] Ningbo Institute of Materials Technology and Engineering, the Chinese Academy of Sciences, Ningbo

来源：

Optoelectronics Letters | 2014年 / 10卷 / 6期

基金：

中国国家自然科学基金;

关键词：

Molar Concentration; Decay Curve; Emission Cross Section; Upconversion Luminescence; Energy Transfer Upconversion;

D O I：

10.1007/s11801-014-4089-4

中图分类号：

学科分类号：

摘要：

Ho3+ with various concentrations and Tm3+ with molar concentration of 1.28% are co-doped in LiYF4 (YLF) single crystals. The luminescent properties of the crystals are investigated through emission spectra, emission cross section and decay curves under the excitation of 808 nm. The energy transfer from Tm3+ to Ho3+ and the optimum fluorescence emission of Ho3+ around 2.05 μm are investigated. The emission intensity at 2.05 μm keeps increasing with the molar concentration of Ho3+ improved from 0.50% to 1.51% when the molar concentration of Tm3+ is kept at 1.28%. Moreover, for the co-doped crystals in which the molar concentrations of Tm3+ and Ho3+ are 1.28% and 1.51%, respectively, the maximum emission cross section reaches 0.760×10−20 cm2 and the maximum fluorescence lifetime is 21.98 ms. All the parameters suggest that these materials have more advantages in the future 2.0 μm laser applications. © 2014, Tianjin University of Technology and Springer-Verlag Berlin Heidelberg.

引用

页码：443 / 446

页数：3

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