基于光纤环形镜的掺磷光纤拉曼激光器  

Phosphosilicate Fiber Raman Laser Based on Fiber Loop Mirror

作　　者：刘鹏[1] 黄朝红[1] 漆伟[1] 罗正钱[1] 许惠英[1] 蔡志平[1] 

机构地区：[1]厦门大学电子工程系,厦门福建361005

出　　处：《中国激光》2012年第2期23-26,共4页Chinese Journal of Lasers

基　　金：福建省青年科技创新基金(2007F3100)资助课题

摘　　要：报道了一种由宽带光纤环形镜(FLM)作为腔反射元件的法布里-珀罗腔掺磷光纤拉曼激光器(RFL),并与使用窄带光纤布拉格光栅(FBG)作为高反镜的腔结构进行了对比研究。研究结果表明,使用宽带FLM替代FBG仍可实现掺磷RFL的窄带激光输出,并且可有效避免拉曼激光从高反镜端的泄漏。在相同的输出镜反射率情况下,使用FLM作为高反镜比使用FBG作为高反镜具有更低的振荡阈值和更高的光-光转换效率。当抽运功率为9.45W时,拉曼激光(1.24μm)输出功率为4.31W,激光器斜效率和光-光转换效率分别为57.9%和45.6%。A phosphosilicate Raman fiber laser（RFL） with Fabry-Perot cavity consisting of a pair of wide-band fiber loop mirrors（FLM） is proposed.A narrow-band fiber Bragg gratings（FBG） is used as a highly-reflective mirror in the same experimental configuration.The results show that the adoption of phosphosilicate RFL with FLM as a highly-reflective mirror instead of FBG can obtain laser output with narrow bandwidth and decrease the optical leakage from the highly-reflective mirror effectively.With the same output mirror,the laser using FLM as its highly-reflective mirror demonstrates a lower threshold and higher conversion efficiency than the one using FBG as the highly-reflective mirror.The output power of the laser at 1.24 μm is up to 4.31 W while the incident pump power is 9.45 W,the slope efficiency is 57.9% and optical-optical conversion efficiency is 45.6%.

关 键 词：激光器 掺磷光纤拉曼激光器 光纤环形镜 光纤布拉格光栅 光泄漏 

分 类 号：TN248.1[电子电信—物理电子学]