Crystal growth and spectral characterizations of Ho3+-doped Li3Ba2La3（MoO4）8 crystal
来源期刊：JOURNAL OF RARE EARTHS2017年第4期
论文作者：宋明君 张娜娜 孟庆国 王林同 李修芝 王国富
文章页码：368 - 373
摘 要：A large Ho3+:Li3Ba2La3（MoO4）8 crystal with high optical quality and well-developed appearance was grown by the flux method. The main spectral properties of the crystal, including the absorption spectra, fluorescence spectra and fluorescence decay curves were recorded at room temperature. The Judd-Ofelt（J-O） theory was applied to calculate the oscillator strength parameters Ωt（t=2, 4, 6）, spontaneous emission probabilities, fluorescence branching ratios, and radiative lifetimes of Ho3+ ions undergoing transitions from ground state 5I8 to the excited states. The stimulated emission cross-section for the 5I7→5I8 transition was estimated to be 1.32×10–20 cm2 at 2045 nm by Fuchtbauer-Ladenburg（F-L） equation and the quantum efficiency of the 5I7 level was calculated to be 89%.
宋明君1，张娜娜1，孟庆国1，王林同1，李修芝2，王国富2
1. School of Chemistry and Chemical Engineering,Weifang University2. Fujian Institute of Research on the Structure of Matter,The Chinese Academy of Sciences
摘 要：A large Ho3+:Li3Ba2La3（MoO4）8 crystal with high optical quality and well-developed appearance was grown by the flux method. The main spectral properties of the crystal, including the absorption spectra, fluorescence spectra and fluorescence decay curves were recorded at room temperature. The Judd-Ofelt（J-O） theory was applied to calculate the oscillator strength parameters Ωt（t=2, 4, 6）, spontaneous emission probabilities, fluorescence branching ratios, and radiative lifetimes of Ho3+ ions undergoing transitions from ground state 5I8 to the excited states. The stimulated emission cross-section for the 5I7→5I8 transition was estimated to be 1.32×10–20 cm2 at 2045 nm by Fuchtbauer-Ladenburg（F-L） equation and the quantum efficiency of the 5I7 level was calculated to be 89%.
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