光子晶体光纤放大器增益特性的实验研究  

Experimental study of gain characteristics of high power photonic crystal fiber amplifier

作　　者：赵振宇[1,2] 段开椋[1] 王建明[1,2] 赵卫[1] 王屹山[1] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室,西安710119 [2]中国科学院研究生院,北京100049

出　　处：《强激光与粒子束》2008年第12期1975-1978,共4页High Power Laser and Particle Beams

基　　金：中国科学院“西部之光”“联合学者”项目(0729591213);国家自然科学基金重点项目(60537060)

摘　　要：采用掺Yb3+双包层光子晶体光纤作为放大器的增益介质,在双端泵浦方式下,理论并实验研究了不同信号光时放大器的增益特性。在双端泵浦方式下,泵浦总功率为150.2 W、信号光功率为6 W时,获得了72 W的功率输出,斜率效率达到了60%。实验发现当泵浦总功率超过一定值时,由光纤端面反射形成的振荡腔引起放大器寄生振荡,并由于各种非线性效应出现了自脉动现象,影响了输出功率的进一步提高。The gain characterization of photonic crystal fiber amplifier is theoretically and experimentally studied by using double-side pumped technique. The gain curves for different pumping power and different signal lights are obtained experimentally. When the power of the probe light is 6 W and the total pump power is 150.2 W, the output power, up to 72 W and the slope efficiency 60%, have been achieved eventually with double-side pumped. It is found in the experiment that when the total pump power is increased over a certain value, the parasitic oscillation and the self-pulsation are observed in the amplifier, because of the resonant cavity caused by the surface reflection of fiber and nonlinear effect, and in turn this degrades the system performance.

关 键 词：掺Yb^2+光纤 光子晶体光纤 光纤激光器 光纤放大器 双端泵浦 增益 

分 类 号：O432.12[机械工程—光学工程]