Pulse Repetition-Rates in a Passive, Self-Starting, Femtosecond Soliton Fibre Laser
Pulse Repetition-Rates in a Passive, Self-Starting, Femtosecond Soliton Fibre Laser
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DOI：
10.1049/el:19910909
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发表时间：
1991-08
期刊：
影响因子：
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通讯作者：
D. Richardson;R. Laming;D. Payne;V. J. Matsas;M. W. Phillips
中科院分区：
文献类型：
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作者：
D. Richardson;R. Laming;D. Payne;V. J. Matsas;M. W. Phillips
稀土掺杂光纤具有较宽的增益带宽，为产生超短光脉冲提供了理想的介质。迄今为止，锁模光纤激光器的研究主要集中在主动锁模方案上，该方案结合了快相位[1]和调幅器[2]。然而，光纤中可获得的大量非线性效应使被动锁模成为一个有吸引力的命题。最近报道了一种基于非线性放大环镜（NALM）[3]反射特性的自启动、被动锁模方案[4,5]。该系统既能进行皮秒/纳秒持续时间的平方脉冲操作[4]，又能产生超短飞秒孤子[5,6]。本文讨论了激光器的各种工作模式，并给出了脉冲重复率的结果，脉冲重复率是一个实用的超短孤子源的重要特征。
Rare-earth doped optical fibres offer wide gain bandwidths and provide an ideal medium for the generation of ultra-short optical pulses. To date research in mode-locked fibre lasers has centered on active mode-locking schemes incorporating fast phase [1] and amplitude modulators [2]. However, the large non-linear effects obtainable in optical fibres make passive mode-locking an attractive proposition. A self-starting, passive mode-locking scheme based on the reflection properties of the Non-linear Amplifying Loop Mirror (NALM) [3] has recently been reported [4,5]. The system is capable of both picosecond/nanosecond duration square pulse operation [4] and ultra-short femtosecond soliton generation [5,6]. In this paper we discuss the various modes of operation of the laser and present results on pulse repetition rates, an important characteristic for a practical source of ultra-short solitons.