Theoretical Study on the Multi-soliton Output of Nonlinear Polarization Rotation Mode-locked Thulium-doped Fiber Laser
This article investigates the evolution characteristics of soliton molecules and noise-like pulses in passively mode-locked thulium-doped fiber lasers based on nonlinear polarization rotation.This theoretical research shows that when the laser operates under adverse dispersion conditions and the cavity parameters are correctly configured,stable mode-locked soliton pulses can be generated.By finely adjusting the polarization state inside the cavity and moderately increasing the pump power,the output of soliton molecules can be achieved.Continuing to alter the cavity conditions can also obtain noise-like pulses.The adjustment of pump power and polarization controller becomes a critical factor in generating multiple multi-pulse modes by chang-ing the intracavity gain.This discovery provides a valuable reference for a deeper understanding of the dy-namic characteristics of multi-solitons generated by 2 μm band mode-locked thulium-doped fiber lasers in the negative dispersion region.
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维普
