Dispersion-managed mode-locking in an all-fiber Er-doped fiber laser with OAM output based on mode superposition

【摘要】 We present the dispersion-managed mode-locked pulse generation in the Er-doped fiber laser in this work. The linear cavity laser scheme is implemented with an all-fiber ring serving as the total reflection mirror and a semiconductor saturable absorber mirror(SESAM) as the mode-locker and non-transparent mirror. The dispersion compensation is applied to change the net dispersion from anomalous to normal dispersion, which integrates mode-locked regimes in the-0.495-+0.197 ps~2 net-cavity-dispersion range by incorporating different lengths of the dispersion compensating fiber(DCF). The noise-like mode-locked pulse and conventional soliton are observed during the net-cavity-dispersion variation process. In addition, the homemade mode-selective couplers(MSCs) are utilized to realize high-mode-purity orbital angular momentum(OAM)outputs based on the mode superposition principle.更多还原

【Abstract】 We present the dispersion-managed mode-locked pulse generation in the Er-doped fiber laser in this work. The linear cavity laser scheme is implemented with an all-fiber ring serving as the total reflection mirror and a semiconductor saturable absorber mirror(SESAM) as the mode-locker and non-transparent mirror. The dispersion compensation is applied to change the net dispersion from anomalous to normal dispersion, which integrates mode-locked regimes in the-0.495-+0.197 ps~2 net-cavity-dispersion range by incorporating different lengths of the dispersion compensating fiber(DCF). The noise-like mode-locked pulse and conventional soliton are observed during the net-cavity-dispersion variation process. In addition, the homemade mode-selective couplers(MSCs) are utilized to realize high-mode-purity orbital angular momentum(OAM)outputs based on the mode superposition principle.更多还原