掺镱双包层光纤光栅激光器输出特性的研究

Output characteristics of Yb^(3+) doped double-clad fiber grating laser

通过对泵浦源LD的温度控制 ,研究了不同温度对泵浦源波长以及光纤激光器输出特性的影响。利用熔接在掺镱双包层光纤两端的光纤光栅作为光纤激光器的谐振腔 ,采用锥度光纤耦合的方法实现了 5 .1W的单模激光输出 ,输出波长 110 0nm ,最大转换效率 6 3%。

In the experiment,we adjust LD’s wavelength by control of temperature and analyze the characteristics of fiber laser. The fiber laser in this experiment is composed of a high-power LD pumped with output wavelength of 970nm and a double-clad fiber spliced fiber Bragg gratings (FBGs) at both ends. Experimentally through a taper fiber,we have realized 5.1W of output power at 1100nm,with the highest conversion efficiency of 63%.