【摘要】 对实验制备的Er3+/Yb3+共掺杂3CaO-Al2O3-3SiO2样品在980激发下的上转换发光特性进行了研究,检测到由处于激发态能级2H11/2,4S3/2和4F9/2的Er3+离子分别向基态4I15/2跃迁时发出的波长依次为523,547和656 nm的上转换发光。做出了上转换发光强度与激发功率关系的曲线图,并结合测得的声子能量对相应跃迁机制进行了分析,发现上转换过程中Yb3+对的敏化作用起主要作用。更多还原

【Abstract】 Samples of Er³⁺/Yb³⁺codoped 3CaO-Al₂O₃-3SiO₂ compounds were prepared,and the properties of frequency upconversion of the samples under the excitation of 980 nm diode laser were studied.Green and red emissions centered at 523,547 and 656 nm,corresponding to the transitions（）²H_11/2→（）⁴I_15/2,（）⁴S_3/2→（）⁴I_15/2,and（）⁴F_9/2→（）⁴I_15/2,respectively,were observed.The dependence of the upconversion fluorescence intensity on the pumping power,and the phonon energy of each sample were observed,and the mechanism of frequency upconversion based on these two items was discussed.更多还原