| LI Shan-shan,XIA Hai-ping,DONG Yan-ming,FU Li,GU Xue-mei,ZHANG Jian-li,WANG Dong-jie,JIANG Hao-chuan,CHEN Bao-jiu.Luminescent properties of Tm3+/ Ho3+ co-doped LiYF4 crystals[J].Optoelectronics Letters,2014,10(6):443-446 |
| Luminescent properties of Tm3+/ Ho3+ co-doped LiYF4 crystals |
| Author Name | Affiliation | | LI Shan-shan | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | XIA Hai-ping | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | DONG Yan-ming | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | FU Li | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | GU Xue-mei | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | ZHANG Jian-li | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | WANG Dong-jie | Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo 315211, China | | JIANG Hao-chuan | Department of Physics, Dalian Maritime University, Dalian 116026, China | | CHEN Bao-jiu | Ningbo Institute of Materials Technology and Engineering, the Chinese Academy of Sciences, Ningbo 315211, China |
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| Abstract: |
| 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. |
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| This work has been supported by the National Natural Science Foundation of China (Nos.51472125 and 51272109), the Natural Science Foundation of Ningbo City (No.201401A6105016), and K.C. Wong Magna Fund in Ningbo University. |
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