报道了一种基于光纤饱和吸收体的掺镱全光纤调Q激光器，为了获得较高峰值功率较窄脉宽的激光脉冲输出，利用掺镱光纤的可饱和吸收效应，以20/130 μm规格的大模场双包层掺镱光纤作为增益光纤，以10/130 μm规格的单模双包层掺镱光纤作为可饱和吸收体来实现被动调Q。该激光器采用全光纤化的结构，结构紧凑，以较低的成本获得了较为高效的脉冲输出。最终获得了平均功率最高为3 W，直线效率约为30%，重复频率为10~100 kHz可调，脉宽最窄为344 ns，光谱宽度为0.05 nm、中心波长为1 064 nm的激光输出。

An Yb-doped all-fiber Q-switched laser based on fiber saturable absorber was reported. In order to obtain laser pulses output with a higher peak power and a narrower pulse width, the saturable absorption effect of Ytterbium-doped fiber was used with laser. The 20/130 μm large mode double cladding Yb-doped fiber was used as the gain fiber. The 10/130 μm single mode double cladding Yb-doped fiber was used as saturable absorber. The laser adopted a all fiber-optic structure, and a relatively stable pulse output was obtained at a relatively low cost. The maximum average power was 3 W, the slope efficiency was 30%, the repetition rate was 10–100 kHz, and the minimum pulse duration was 344 ns with the spectral width of 0.05 nm and the central wavelength of 1 064 nm.