报道了高脉冲能量全光纤结构半导体可饱和吸收镜锁模的2.0 μm波段掺铥超短脉冲光纤激光器。在抽运功率为1.8 W时，开始得到稳定的重复频率为14.3 MHz的锁模激光脉冲，平均输出功率为5 mW；当抽运功率增加到3.8 W 时，最大平均输出功率达到59 mW，相应的最高单脉冲能量为4.1 nJ。此时测得锁模激光脉冲的脉宽为2.2 ps，中心波长为2015 nm，3 dB光谱带宽为2.9 nm。

High-pulse-energy semiconductor saturable absorber mirror mode-locked 2.0 μm thulium-doped ultrafast all-fiber laser is reported. Stable mode-locked pulse train occurred at 1.8 W incident pump power and the pulse repetition rate is 14.3 MHz in a ring cavity configuration. Increasing the incident pump power to 3.8 W, the maximum output power is 59 mW, corresponding to the maximum single pulse energy of 4.1 nJ. The pulse width is measured to be 2.2 ps, the center wavelength and the spectral bandwidth are 2015 nm and 2.9 nm respectively.