激光与光电子学进展, 2014, 51 (4): 040605, 网络出版: 2014-04-08
分布式侧面耦合包层抽运光纤激光器数值模拟
Simulation of the Distributed Side-Coupled Cladding-Pumped Fiber Lasers
摘要
研究了新型分布式侧面耦合包层抽运光纤激光器的特性。通过建立相互耦合的速率方程组,对分布式侧面耦合包层抽运光纤激光器进行了数值仿真。通过数值模拟与端面抽运双包层激光器进行对比,分别得到了两种模型的抽运光光场分布和输出激光分布,以及探讨了最佳光纤长度等激光器特性参数。结果显示,分布式侧面耦合包层抽运光纤的信号光纤中抽运光分布比较均匀,两端的热负荷较小,激光产生的线性度很好,热量能够分散到整根光纤,在高功率激光器的应用中具有较大的优势,这为更大功率光纤激光器的实现提供了新的思路。
Abstract
The characteristics of distributed side-coupled cladding-pumped fiber laser are studied with simulation based on a coupled rate equation model. Both the distributed side-coupled cladding-pumped fiber lasers and the end-pump double-cladding fiber lasers are simulated, and the distributions of the pump light and laser of the two models are given out. Then the optimum fiber length is discussed. The results show that the pump light in the signal fiber of distributed side-coupled cladding-pumped fiber is well-distributed and the thermal load of the two ends is released. The laser is produced linearly so that the heat is dispersed to the whole fiber. It is a great advantage to be applied to high power fiber lasers and provides a new road to the higher fiber lasers.
黄值河, 曹涧秋, 郭少锋, 陈金宝. 分布式侧面耦合包层抽运光纤激光器数值模拟[J]. 激光与光电子学进展, 2014, 51(4): 040605. Huang Zhihe, Cao Jianqiu, Guo Shaofeng, Chen Jinbao. Simulation of the Distributed Side-Coupled Cladding-Pumped Fiber Lasers[J]. Laser & Optoelectronics Progress, 2014, 51(4): 040605.