The formation of harmonic dissipative soliton resonance (DSR) is experimentally investigated in an Yb-doped fiber laser operating in large normal dispersion regime. The DSR is observed at a fundamental frequency of 221 KHz, which delivered square-shaped with of 18.7–98.5 ns and single pulse energy of 0.25 μJ at 1056 nm. By adjusting the PCs, the DSR square pulses could be split into their harmonic mode-locked (HML) counterparts. These experimental results provide a new viewpoint for the further understanding of the mechanism and characteristics of HML square pulses. Based on a two-stage all-fiber PM master oscillator power amplifier (MOPA) system seeded by this oscillator, the pulses are amplified up to 110 W output power with the polarization extinction ratio (PER) of 18.7 dB at different frequencies ranging from 221KHz to 663 KHz and a record pulse energy of 0.51 mJ at the frequency of 221 KHz is achieved.

谐波耗散孤子共振（DSR）的形成是在工作于大正常色散状态的掺Yb光纤激光器中进行实验研究的。DSR在221 KHz的基频上观察到，在1056 nm处呈18.7–98.5 ns的方波形和0.25μJ的单脉冲能量。通过调整PC，可以将DSR方波分成其谐波锁模（HML）对应部分。这些实验结果为进一步了解HML方波脉冲的机理和特性提供了新的观点。基于该振荡器播种的两级全光纤PM主振荡器功率放大器（MOPA）系统，该脉冲在偏振消光比（PER）为18的情况下被放大到110 W输出功率。