Linear cavity dissipative soliton mode-locked laser based on polarization-maintaining fiber structure
To obtain the stable mode-locked pulse train,the effects of filter bandwidth,saturable absorber(SA)modulation depth,and SA recovery time on mode-locking were analyzed numerically by the split-step Fourier method.According to the calculation results,the laser is established.The oscillator can generate self-starting dissipative soliton pulses train with a spectrum bandwidth of 0.104 nm and a repetition rate of 102.32 MHz.Meanwhile,the pulse train shows a slow broadening rate and good shape-preserving ability in the amplification process.This study indicates that this laser will have great application prospects in fiber probes,frequency comb,parameters optic and other fields.
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