Spectral-temporal dynamics of multipulse mode-locking
Spectral-temporal dynamics of multipulse mode-locking
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DOI：
10.1063/1.4983718
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发表时间：
2017-05
影响因子：
4
通讯作者：
Ying Yu;Bowen Li;Xiaoming Wei;Yiqing Xu;K. Tsia;K. Wong
中科院分区：
文献类型：
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作者：
Ying Yu;Bowen Li;Xiaoming Wei;Yiqing Xu;K. Tsia;K. Wong
除了稳定的脉冲生成之外，被动锁模光纤激光器还很容易陷入不稳定的多脉冲锁模状态。迄今为止，多脉冲锁模的诞生和动态行为很少被实验探索，特别是在谱域。在这封信中，以单次方式观察了被动锁模光纤激光器的几种多脉冲光谱-时间动力学，例如能量量子化、自相位调制光谱展宽、波长移位、光谱干涉和超弱脉冲相互作用。这项研究得益于谱时技术的高时间分辨率，即时域为 50 ps，谱域为数十纳秒。此外，我们的光谱-时间分析系统的观察时间跨度很宽，即 >6 毫秒，相当于 100 000 次往返，可以对单个脉冲进行进化表征。结果将对优化锁模性能产生重大影响...
In addition to stable pulse generation, passively mode-locked fiber lasers can easily run into an unstable regime of multipulse mode-locking. The birth and dynamic behaviors of multipulse mode-locking so far have rarely been experimentally explored, particularly in the spectral domain. In this letter, several kinds of multipulse spectral-temporal dynamics of a passively mode-locked fiber laser are observed in a single-shot manner, e.g., energy quantization, self-phase modulation spectral broadening, wavelength shifting, spectral interfering, and ultraweak pulse interaction. This study is enabled by the high temporal resolution of spectral-temporal technology, i.e., 50 ps in the time domain and tens of nanoseconds in the spectral domain. Moreover, a wide observing time span of our spectral-temporal analyzing system, i.e., >6 ms—equivalent to 100 000 round trips, enables evolutionary characterization of individual pulses. The results will have a significant impact on optimizing the performance of mode-locke...