双端泵浦的高功率掺Yb^(3+)双包层光纤激光器  

High power ytterbium-doped double clad fiber laser with dual-end pumping scheme

作　　者：许党朋[1] 李明中[1] 隋展[1] 林宏奂[1] 王建军[1] 张锐[1] 卢振华[1] 车雅良[1] 黄小东[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心

出　　处：《强激光与粒子束》2007年第11期1841-1844,共4页High Power Laser and Particle Beams

基　　金：中国工程物理研究院双百人才基金资助课题(2004R0205)

摘　　要：分析了Yb3+的能级结构、光谱特性以及激光发射特性。实验研究了中心波长为1100 nm、输出功率为61.6W、斜率效率为55%的高功率掺Yb3+双包层光纤激光器。采用了两个中心波长在915 nm的高功率激光二极管分别从光纤的两端将泵浦光耦合进入光纤,采用45°对波长在(1100±10)nm的激光高反,对波长在(915±10)nm的泵浦光高透的双色镜将激光输出,实验发现了掺Yb3+双包层光纤的合作发光效应。理论分析表明,掺Yb3+双包层光纤中合作发光效应是由Yb3+对在激光产生过程中的吸收与发射引起的。The energy level structure, the spectrum characteristic and the laser emission characteristic of ytterbium ions were analyzed. A high power cladding-pumped ytterbium-doped fiber laser generating 61.6 W continuous-wave output power at 1. 1μm with 55%slope efficiency was demonstrated. Two diode-laser-stacks （wavelength 915 nm） were used for pumping from the two ends of the fiber. A dichroic mirror with 45% high reflectivity at （1 100±10） nm and high transmissivity at （910±10） nm was used for exporting laser. The cooperative luminescence effect in the ytterbium doped double clad fiber was obtained in the experiment, and the mechanism of this effect was analyzed as the absorption and emission of Yb^3＋ ion＇ pairs.

关 键 词：双端泵浦 双包层光纤 光纤激光器 合作发光 镱离子 

分 类 号：TN244[电子电信—物理电子学]