Quasi mode-locking of coherent feedback random fiber laser.
Quasi mode-locking of coherent feedback random fiber laser.
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相干反馈随机光纤激光器的准锁模
DOI：
10.1038/srep39703
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发表时间：
2016-12-22
影响因子：
4.6
通讯作者：
Yu SF
中科院分区：
文献类型：
--
作者：
Ma R;Zhang WL;Zeng XP;Yang ZJ;Rao YJ;Yao BC;Yu CB;Wu Y;Yu SF
锁模技术是激光发展史上的一个里程碑，它可以产生短光脉冲并稳定激光器。长期以来，这种现象只发生在标准有序激光器中，直到最近才发现，由纳米级粒子形成的无序无序激光器也会发生这种现象。在这里，我们报道了一种所谓的准锁模相干反馈随机光纤激光器的实现，该激光器由点反射器和插入石墨烯饱和吸收器的随机分布式光纤布拉格光栅阵列之间形成的部分无序线性腔组成。我们证明了在这种随机光纤激光器中，通过所谓的集体共振现象，在准锁模区产生了多组具有不同重复频率的规则光脉冲/子脉冲。这项工作为研究相干反馈无序结构随机激光发射的锁模和脉冲动态调节提供了平台，为开发具有宽调谐范围的新型多频脉冲光纤激光器铺平了道路。
Mode-locking is a milestone in the history of lasers that allows the generation of short light pulses and stabilization of lasers. This phenomenon is known to occur only in standard ordered lasers for long time and until recently it is found that it also occurs in disordered random lasers formed by nanoscale particles. Here, we report the realization of a so-called quasi mode-locking of coherent feedback random fiber laser which consists of a partially disordered linear cavity formed between a point reflector and a random distributed fiber Bragg grating array with an inserted graphene saturable absorber. We show that multi-groups of regular light pulses/sub-pulses with different repetition frequencies are generated within the quasi mode-locking regime through the so-called collective resonances phenomenon in such a random fiber laser. This work may provide a platform to study mode locking as well as pulse dynamic regulation of random lasing emission of coherent feedback disordered structures and pave the way to the development of novel multi-frequency pulse fiber lasers with potentially wide frequency tuning range.
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分布式超快光纤激光器
影响因子：
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