Influence of In3+ ions concentration on spectroscopic properties of Ho:LiNbO3 crystals
来源期刊：JOURNAL OF RARE EARTHS2012年第8期
论文作者：代丽 李大勇 张颖 钱钊 徐超 徐玉恒
文章页码：780 - 784
摘 要：In:Ho:LiNbO3 crystals doped with various concentrations of In3+（0, 1 mol.%, 3 mol.%, 5 mol.%）, fixed concentrations of Ho3+ （1 mol.%） were grown by Czochralski method. The X-ray powder diffraction, infrared and UV-visible absorption spectra were measured and modified. Judd-Ofelt approach was employed to study the effect of In doping on spectroscopic properties of Ho:LiNbO3 crystals. In concentrations in crystals were analyzed by an inductively coupled plasma optical emission spectrometry （ICP-OE/MS）. For In （3 mol.%）:Ho （1 mol.%）:LiNbO3 crystal, the obtained intensity parameters were: Ω2=9.6563, Ω4=4.2195, Ω6=14.1526. The results showed that the Ω2 and Ω6 parameters increased with the increase of In3+ concentration. When the In doping concentration was up to 5 mol.%, Ω2 and Ω6 suddenly decreased. In2O3 incorporation had a strong effect on the radiative lifetime, but had less influence on fluorescence branching ratios. The effective distribution coefficient of In3+ in In:Ho:LiNbO3 crystals was less than 1 and increased with increasing concentration of In3+ in the melt.
代丽1，李大勇1，张颖1，钱钊2，徐超3，徐玉恒3
1. School of Materials Science and Engineering, Harbin University of Science and Technology2. School of Computer Science and Technology, Harbin Institute of Technology3. Department of the applied chemistry, Harbin Institute of Technology
摘 要：In:Ho:LiNbO3 crystals doped with various concentrations of In3+（0, 1 mol.%, 3 mol.%, 5 mol.%）, fixed concentrations of Ho3+ （1 mol.%） were grown by Czochralski method. The X-ray powder diffraction, infrared and UV-visible absorption spectra were measured and modified. Judd-Ofelt approach was employed to study the effect of In doping on spectroscopic properties of Ho:LiNbO3 crystals. In concentrations in crystals were analyzed by an inductively coupled plasma optical emission spectrometry （ICP-OE/MS）. For In （3 mol.%）:Ho （1 mol.%）:LiNbO3 crystal, the obtained intensity parameters were: Ω2=9.6563, Ω4=4.2195, Ω6=14.1526. The results showed that the Ω2 and Ω6 parameters increased with the increase of In3+ concentration. When the In doping concentration was up to 5 mol.%, Ω2 and Ω6 suddenly decreased. In2O3 incorporation had a strong effect on the radiative lifetime, but had less influence on fluorescence branching ratios. The effective distribution coefficient of In3+ in In:Ho:LiNbO3 crystals was less than 1 and increased with increasing concentration of In3+ in the melt.
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