【摘 要】
：
采用坩埚下降法生长了两个系列晶体3at%Yb：Ca_（1-x）R_xF_（2＋x）（R=La,Gd;x=0,0.01,0.03,0.06,0.09）,测试了晶体的XRD、拉曼光谱、吸收光谱、荧光光谱、荧光寿命。系统地研究了调剂离子
【机 构】
：
上海大学材料研究所,中国科学院上海硅酸盐研究所
论文部分内容阅读
采用坩埚下降法生长了两个系列晶体3at%Yb：Ca_（1-x）R_xF_（2＋x）（R=La,Gd;x=0,0.01,0.03,0.06,0.09）,测试了晶体的XRD、拉曼光谱、吸收光谱、荧光光谱、荧光寿命。系统地研究了调剂离子La~（3＋）、Gd~（3＋）对Yb：CaF_2晶体晶格常数、拉曼光谱和光谱性能的影响规律,分析讨论了Yb~（3＋）离子的结构与光谱性能之间的关系。研究结果表明,随着La~（3＋）、Gd~（3＋）掺杂浓度增加,晶体的晶格常数和拉曼半高宽都逐渐增大,这说明晶体膨胀和晶格振动模式种类
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