中文摘要：

在980nm激发下,研究了Er3＋、Yb3＋和Tb3＋单掺或共掺氟氧锗酸盐玻璃的上转换发光性质和机理.室温下,观察到了强的绿色和红色上转换发光,其发光中心位于524、546和658nm处,分别对应于Tb3＋离子的5D4→7FJ（J=5和0）和Er3＋离子的（2H11/2、4S3/2和4F9/2）→4I15/2跃迁.研究了TbF3、YbF3掺杂浓度以及激光功率对上转换发光强度的影响,讨论了Er3＋、Yb3＋和Tb3＋之间的能量传递和上转换机理.

英文摘要：

Up-conversion luminescence properties and energy-transfer processes in Er3＋,Yb3＋ and Tb3＋ single doped or co-doped oxyfluorogermanate glasses were studied under 980nm laser excitation.Green and red up-conversion emissions around 524,546 and 658nm which can be assigned to the Tb3＋∶5D4→7FJ（J=5 and 0） and Er3＋∶（2H11/2,4S3/2 and 4F9/2）→4I15/2 transitions,respectively,were strongly observed at room temperature.Up-conversion luminescence intensity depended on the YbF3,TbF3 concentration and excitation power density.The energy transfer processes among Er3＋,Yb3＋ and Tb3＋,and up-conversion mechanisms were discussed.