双包层光纤激光器不再要求抽运光是单模激光,而且基本上在沿光纤整个长度上抽运,从而大幅度地提高了激光转换效率。给出了一种由半导体激光器(LD)抽运的掺Yb3+双包层光纤激光器,利用976 nm的抽运光,对双包层光纤进行端抽运,光纤后端与双色镜构成Fabry-Perot干涉仪兼作反馈腔镜,得到波长为1085 nm,1090 nm,1095 nm和1100 nm的激光输出,每个波长激光的线宽为0.33 nm,输出总激光功率为1.2 W,信噪比超过20 dB,斜率效率为52%。

For the double clad fiber laser, differ from ordinary fiber laser, the requirement of a single mode for pumping the fiber laser is needless, furthermore, the pump beam coupling into fiber along nearly whole fiber, consequently, the laser conversion efficiency is improved. In this paper, a novel Yb3+-doped multi-wavelength double clad laser pumped by 976 nm laser diode is presented. The output wavelength are 1085, 1090, 1095 and 1100 nm. The laser exhibits 0.33 nm line-width, 1.2 W laser out power, 20 dB signal-to-noise (SNR) and 52% slope efficiency.