基于能量传递的Pr^(3+):Ce^(3+):ZBLAN光纤中上转换激光器的研究  

Study on Pr^(3+):Ce^(3+):ZBLAN fiber upconversion laser basing on energy transfer

作　　者：罗涛[1,2] 郑泰玉[2] 戴振文[3] 

机构地区：[1]长春师范学院物理学院,吉林长春130032 [2]东北师范大学物理学院,吉林长春130024 [3]吉林大学物理学院,吉林长春130023

出　　处：《东北师大学报（自然科学版）》2010年第2期68-72,共5页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(13002103)

摘　　要：在Pr3+:Ce3+:ZBLAN光纤中,研究了Pr3+的4f5d上转换激发后向Ce3+的5d能级进行能量传递产生激光的可行性.考虑了以1D2为上转换中间能级的最佳泵浦方案,利用相关实验数据建立了粒子数速率方程和传播方程.经过数值计算表明:在此光纤中利用Pr3+向Ce3+的能量传递过程中,能够产生以Ce3+的5d能级为工作能级的激光振荡;最佳光纤长度为0.2m;输出镜的最佳反射率为70%～90%;阈值泵浦功率在20W以上.To find new fiber laser,this paper investigated the possibility of fiber laser based on energy transfer from the upconversion excited state 4f5d of Pr3＋ to 5d state of Ce3＋ in Pr3＋：Ce3＋：ZBLAN fiber.In this paper a best solution for the two-step excitation for Pr3＋ 4f5d state through intermediate manifold 1D2 was considered,and the population rate equations and propagation equations were built on the experimental data.By numerical calculation,it concluded that,this fiber can realize laser oscillation for 5d state of Ce3＋ based on energy transfer from Pr3＋ to Ce3＋,and the optimum cavity length is 0.2 m,the best reflectivity of output coupler is about 70%～90%,threshold pump powers are more than 20 W.

关 键 词：能量传递 上转换激光器 ZBLAN光纤 粒子数速率方程 

分 类 号：TN241[电子电信—物理电子学]