2.1 μJ, 14.9 W dissipative soliton resonance from an all-polarization-maintaining holmium-doped fiber laser system

We propose a linear polarization and high energy dissipative soliton resonance (DSR) in an all-polarizationmaintaining (all-PM) holmium-doped fiber laser system based on the nonlinear amplifying loop mirror (NALM) for the first time. The fiber laser system includes an all-PM mode-locked seed laser and an all-PM threestage fiber amplifier. In the all-PM seed laser, a segment of polarization-maintaining dispersion compensation fiber (PM-DCF) is utilized to increase intracavity nonlinearity and compensate intracavity dispersion. A selfstarted DSR pulse operating at 2071.9 nm is obtained with a repetition rate of 7.081 MHz and a pulse width of 5.8 ns. The maximum average power is 102.4 mW, corresponding to a pulse energy of 14.5 nJ. To further enhance the pulse energy and output power of the DSR laser system, a three-stage all-PM amplification system is designed. The average pulse power increases to 14.9 W and the pulse energy increases to 2.1 mu J, which represents the highest average power and pulse energy of the all-PM holmium-doped DSR mode-locked fiber laser system. The all-PM holmium-doped DSR laser system demonstrates significant potential for applications in the field of ZGP-OPO systems.