Soliton-similariton fibre laser
Soliton-similariton fibre laser
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DOI：
10.1038/nphoton.2010.33
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发表时间：
2010-05-01
期刊：
影响因子：
35
通讯作者：
Ilday, F. Oemer
中科院分区：
文献类型：
--
作者：
Oktem, Bulent;Ulgudur, Coskun;Ilday, F. Oemer
被动锁模光纤激光器（1-6）的快速发展目前是由最近发现的新的锁模机制，即自相似演化脉冲（similariton）（7）和全正常色散（耗散孤子）制度（8，9）。这些从根本上不同于先前已知的孤子（10）和色散管理孤子（拉伸脉冲）（11）状态。在这里，我们报道了一个光纤激光器，其中锁模脉冲在增益段演化为一个类似的孤子，并在腔的其余部分转化为一个规则的孤子。据我们所知，这是第一次在激光腔内观察到存在增益的相似子，即放大器相似子。由两个不同的非线性波的周期组合构成的耗散非线性腔中解的存在性是新颖的，并且可能适用于各种其他非线性系统。对于非常大的滤波器带宽，我们的激光器的色散管理孤子激光器的工作制度的方法，对于非常小的色散段长度，它接近耗散孤子激光器。
Rapid progress in passively mode-locked fibre lasers(1-6) is currently driven by the recent discovery of new mode-locking mechanisms, namely, the self-similarly evolving pulse (similariton)(7) and the all-normal-dispersion (dissipative soliton) regimes(8,9). These are fundamentally different from the previously known soliton(10) and dispersion-managed soliton (stretched-pulse)(11) regimes. Here, we report a fibre laser in which the mode-locked pulse evolves as a similariton in the gain segment and transforms into a regular soliton in the rest of the cavity. To our knowledge, this is the first observation of similaritons in the presence of gain, that is, amplifier similaritons, within a laser cavity. The existence of solutions in a dissipative nonlinear cavity comprising a periodic combination of two distinct nonlinear waves is novel and likely to be applicable to various other nonlinear systems. For very large filter bandwidths, our laser approaches the working regime of dispersion-managed soliton lasers; for very small anomalous-dispersion segment lengths it approaches dissipative soliton lasers.