掺镱双包层光纤激光器的输出特性  

Output Characteristics of Yb3 +-doped Double-clad Fiber Laser

作　　者：张利平[1] 李新忠[1] 甄志强[1] 

机构地区：[1]河南科技大学物理与工程学院,河南洛阳471023

出　　处：《河南科技大学学报（自然科学版）》2014年第1期83-87,7,共5页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(61205086)

摘　　要：运用速率方程组,推导了掺镱双包层光纤激光器的阈值泵浦光功率以及输出光功率的解析解。在研究阈值泵浦光功率的情况中,考虑了光纤中自发辐射的存在。对腔镜反射率和光纤长度进行了讨论,研究了激光器的最佳光纤长度。研究结果表明:腔镜反射率越小,阈值泵浦光功率和输出光功率越大。当激光器工作于最佳光纤长度时,输出光功率最大。Analytical solutions to threshold pump power and output power of Yb3 +-doped double-clad fiber laser were deduced by using rate equations. Under the condition of threshold,the amplified spontaneous emission was considered. The cavity mirror reflectivity and the optical fiber length were discussed. The optimal fiber length was investigated. The results show that the smaller cavity mirror reflectivity the higher threshold pump power and output laser power. When the fiber laser runs at the optimal fiber length,the output laser power is highest.

关 键 词：双包层光纤激光器 解析解 自发辐射 阈值泵浦光功率 

分 类 号：TN248[电子电信—物理电子学]