中国激光, 2014, 41 (10): 1006002, 网络出版: 2014-08-26   

Er3+/Yb3+共掺氟化物颗粒的红外光谱特性及Judd-Ofelt理论分析

Near-Infrared Spectroscopic Properties and Judd-Ofelt Theory Analysis of Er3+/Yb3+ Co-Doped Fluoride Particles
刘芳超 1,2,*
作者单位
1 天津大学精密仪器与光电子工程学院, 天津 300072
2 天津大学光电信息教育部重点实验室, 天津 300072
摘要
制备了Er3+/Yb3+共掺氟化物基质颗粒并对其吸收光谱进行测试。研究了不同基质、煅烧温度以及不同的Er3+/Yb3+共掺比例对颗粒在980 nm及1550 nm波段附近吸收特性的影响。应用Judd-Ofelt(J-O)理论对样品光谱进行了分析,拟合得到强度参数为Ω2=9.9887,Ω4=2.7333,Ω6=0.4868。结果表明,样品通过高温热处理提高了声子辅助跃迁几率,提高了能量转化效率。Er3+/Yb3+以16比例混合共掺时吸收性能最好。J-O理论分析表明,氟化物颗粒有较低的声子能量,Er3+/Yb3+共掺氟化物材料具有较好的红外吸波特性,是一种很好的红外上转换材料。
Abstract
Er3+/Yb3+ ion co-doped fluoride particles are synthesized and analyzed by their absorption spectra. The influence of the substances, the calcination temperature, and the doping ratio of Er3+ and Yb3+ on the absorption of the synthesized materials are studied. By analyzing the spectra of the samples with the Judd-Ofelt (J-O) theory, the intensity parameters are obtained as Ω2=9.9887, Ω4=2.7333, Ω6=0.4868, respectively. The results show that the phonon assisted transition probability and the energy transfer efficiency increases after heat treatment of the samples. The best doping ratio of Er3+ and Yb3+ is 16. Analysis based on the Judd-Ofelt theory shows that the synthesized fluoride particles have low phonon energy and good absorption property in the near-infrared region after doping with Er3+ and Yb3+ ions. It can be used as a kind of good materials for near-infrared upconversion.

刘芳超. Er3+/Yb3+共掺氟化物颗粒的红外光谱特性及Judd-Ofelt理论分析[J]. 中国激光, 2014, 41(10): 1006002. 刘芳超. Near-Infrared Spectroscopic Properties and Judd-Ofelt Theory Analysis of Er3+/Yb3+ Co-Doped Fluoride Particles[J]. Chinese Journal of Lasers, 2014, 41(10): 1006002.

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