Spectral properties and energy transfer in Er3+/Yb3+ co-doped LiYF4 crystal

被引：3

作者：

Wang P.-Y. ^{[1
]}

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

Peng J.-T. ^{[1
]}

Hu H.-Y. ^{[1
]}

Tang L. ^{[1
]}

Zhang Y.-P. ^{[1
]}

Chen B.-J. ^{[2
]}

Jiang H.-C. ^{[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, Chinese Academy of Sciences, Ningbo

来源：

Xia, H. (xiahaiping@nbu.edu.cn) | 1600年 / Springer Verlag卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Energy Transfer Process; Effective Segregation; Vertical Bridgman Method; Effective Segregation Coefficient; Effective Line Width;

D O I：

10.1007/s11801-013-3034-2

中图分类号：

学科分类号：

摘要：

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. © 2013 Tianjin University of Technology and Springer-Verlag Berlin Heidelberg.

引用

页码：285 / 288

页数：3

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