N阶级联拉曼光纤激光器理论模型  

Theoretical model of Nth-order cascaded Raman fiber lasers

作　　者：秦祖军[1] 周晓军[1] 伍浩成[2] 邹自立[2] 

机构地区：[1]电子科技大学光电信息学院,四川成都610054 [2]桂林激光通信研究所,广西桂林541004

出　　处：《红外与激光工程》2006年第z3期134-137,共4页Infrared and Laser Engineering

摘　　要：考虑拉曼光纤纤芯有效面积随 Stokes 光波长变化,提出了一种改进的 N 阶级联拉曼光纤激光器理论模型。根据该理论模型,按照拉曼光纤激光器级联阶数 N 的奇偶性分别推导出了第 N 阶 Stokes 光输出功率的解析表达式。通过忽略经输出耦合器反射回拉曼光纤输入端的残余泵浦光功率,计算了5阶级联拉曼光纤激光器的输出特性,并与相关文献上的实验数据进行了比较,结果显示文中的计算结果与实验结果相吻合。文中的理论模型对于设计 N 阶级联拉曼光纤激光器有一定指导意义。An improved theoretical model of Nth-order cascaded Raman fiber lasers(CRFLs)is presented by considering the variation of the Raman fiber effective core area with Stokes wavelength.Analytical expressions of the output power for the Nth Stokes light are determined according to the odd or even cascade number of N.Using the model,we calculate the output characteristics of a 5th-order CRFL by neglecting the residual pump power reflected back to the input side.Good quantitative coincidence between our calculated results and the published experimental dada has been reached.

关 键 词：激光技术 拉曼散射 级联拉曼光纤激光器 理论模型 

分 类 号：TN248[电子电信—物理电子学]