摘要
用高温熔融法制备了Er3+单掺和Er3+ /Yb3+共掺铋酸盐玻璃,测量了上述玻璃样品的吸收光谱、荧光光谱、荧光半高宽和荧光寿命.对高浓度掺杂Er3+时的浓度猝灭现象给出了解释.分析了Er3+ /Yb3+双掺样品中Yb3+对Er3+的敏化过程.在对Er3+ /Yb3+共掺时的研究结果发现, Er3+浓度的变化对荧光半高宽和荧光寿命有显著影响,而Yb3+浓度的变化则对吸收光谱和荧光光谱的强度影响显著.实验获得了Er3+ /Yb3+共掺铋酸盐玻璃在1. 54μm处荧光半高宽达76nm,荧光寿命为0. 55ms.
The bismuth glasses with Er~ 3+ and Er~ 3+ /Yb~ 3+ co-doped were fabricated by the technique of high-temperature melting. The absorption and fluorescence spectra, fluorescence lifetime and FWHM were measured. The explanation of concentration quenching in case of high level Er~ 3+ -doped the bismuth glasses is given. The sensitizing of Yb~ 3+ to Er~ 3+ in Er~ 3+ /Yb~ 3+ co-doped bismuth glasses is discussed. The explanation of the influence on absorption and fluorescence spectra, fluorescence lifetime and FWHM in case of the change of Er~ 3+ or Yb~ 3+ in bismuth glasses with Er~ 3+ /Yb~ 3+ co-doped is given. It is found that the change of Er~ 3+ content has obviously influenced the fluorescence lifetime and FWHM while the change of Yb~ 3+ content has remarkably influenced the absorption and fluorescence intensity. The band at around 1.54 μm in Er~ 3+ /Yb~ 3+ co-doped bismuth glass reaches 76 nm and the fluorescence lifetime is 0.55 ms.
基金
ProjectsupportedbytheNationalNaturalScienceFoundationofChina( 50128202 )
