论文标题
对阈值较低的自动启动Mamyshev振荡器的调查
Investigation on the self-starting Mamyshev oscillator with low threshold
论文作者
论文摘要
我们已经根据具有低阈值的单模纤维配置展示了模式锁定的Mamyshev振荡器。已经研究了光谱过滤器和泵功率对输出激光特性的影响。在光谱过滤器中心波长远离增益光谱的峰值的情况下，激光脉冲略微偏离了相似的进化，而在高泵浦功率下增益成形。此外，当泵功率仅为520兆瓦时，已经实现了自动启动模式锁定操作，这可能会受益于适当的极化条件和小光谱滤波器的分离。激光可以产生1.89-NJ超短脉冲，光谱宽度为54.6 nm。脉冲持续时间可以在峰值功率为21.3 kW的情况下外部压缩至64.69 fs。
We have demonstrated a mode-locked Mamyshev oscillator based on a single-mode-fibre configuration with low threshould. The influences of spectral filters and the pump power on the output laser characteristics have been investigated. In the case with spectral-filter central wavelength far away from the peak of gain spectrum, the laser pulses have deviated slightly from similariton evolution with gain-shaping under high pump power. Moreover, self-starting mode-locking operation has been realized when the pump power was only 520 mW, which might benefit from the appropriate polarization conditions and small spectral filter separation. The laser can generate 1.89-nJ ultra-short pulses with 20-dB spectral width of 54.6 nm. The pulse duration can be compressed externally to 64.69 fs with the peak power of 21.3 kW.
