Pei-yuan Wang,Hai-ping Xia,Jiang-tao Peng,Hao-yang Hu,Lei Tang,Yue-pin Zhang,Bao-jiu Chen,Hao-chuan Jiang.Spectral properties and energy transfer in Er3+/Yb3+ co-doped LiYF4 crystal[J].Optoelectronics Letters,2013,9(4):285-288 Spectral properties and energy transfer in Er3+/Yb3+ co-doped LiYF4 crystal Author Name Affiliation E-mail Pei-yuan Wang  Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo, 315211, China Department of Physics, Dalian Maritime University, Dalian, 116026, China Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315211, China    Hai-ping Xia  Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo, 315211, China Department of Physics, Dalian Maritime University, Dalian, 116026, China Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315211, China  xiahaiping@nbu.edu.cn  Jiang-tao Peng  Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo, 315211, China Department of Physics, Dalian Maritime University, Dalian, 116026, China Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315211, China    Hao-yang Hu  Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo, 315211, China Department of Physics, Dalian Maritime University, Dalian, 116026, China Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315211, China    Lei Tang  Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo, 315211, China Department of Physics, Dalian Maritime University, Dalian, 116026, China Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315211, China    Yue-pin Zhang  Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo, 315211, China Department of Physics, Dalian Maritime University, Dalian, 116026, China Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315211, China    Bao-jiu Chen  Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo, 315211, China Department of Physics, Dalian Maritime University, Dalian, 116026, China Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315211, China    Hao-chuan Jiang  Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo, 315211, China Department of Physics, Dalian Maritime University, Dalian, 116026, China Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315211, China    Abstract:       Laser crystals of LiYF4 (LYF) singly doped with Er3+ in 2.0% and co-doped with Er3+/Yb3+ in about 2.0%/1.0% molar fraction in the raw composition are grown by a vertical Bridgman method. X-ray diffraction (XRD), absorption spectra, fluorescence spectra and decay curves are measured to investigate the structural and luminescent properties of the crystals. Compared with the Er3+ singly doped sample, obviously enhanced emission at 1.5 μm wavelength and green and red up-conversion emissions from Er3+/Yb3+ co-doped crystal are observed under the excitation of 980 nm laser diode. Meanwhile, the emission at 2.7 μm wavelength from Er3+ singly doped crystal is reduced. The fluorescence decay time ranging from 18.60 ms for Er3+ singly doped crystal to 23.01 ms for Er3+/Yb3+ co-doped crystal depends on the ionic concentration. The luminescent mechanisms for the Er3+/Yb3+ co-doped crystals are analyzed, and the possible energy transfer processes from Yb3+ to Er3+ are proposed. Hits: 3735 Download times: 93 View Full Text    Download reader