论文标题
分散折叠的kerr腔中的耗散孤子和开关波
Dissipative solitons and switching waves in dispersion folded Kerr cavities
论文作者
论文摘要
我们从理论上和实验研究Kerr非线性光学微孔子中的耗散相干结构的形成,其整合分散体超过了自由光谱范围。我们证明,沿着谐振器的周长的任何周期性调制,例如定期变化的分散体,都可以激发高阶梳状结构。在两种异常和正常分散病例中,我们探讨了相干微重生产生的结果。我们能够通过同步脉冲驱动的高峰值功率在微孔子中访问这种制度。对于异常分散中的孤子,我们观察到高阶相匹配的分散波的形成(“ kelly”侧带),其中折叠的色散交叉频率梳子网格。在正常的分散体中,我们看到了与法拉第不稳定性引起的周期倍增模式的切换波锋的共存,这表现为强大的卫星微型镜头,同时共享相同的重复速率,这表现为高度分离的核心微磁体的两侧。分散调节的相匹配的这种状态开辟了Kerr腔物理学和微型尸体生成的维度,尤其是对于正常分散体中微生物的光谱扩展和可调性。
We theoretically and experimentally investigate the formation of dissipative coherent structures in Kerr nonlinear optical microresonators, whose integrated dispersion exceeds the free-spectral range. We demonstrate that the presence of any periodic modulation along the resonator's circumference, such as periodically varying dispersion, can excite higher-order comb structures. We explore the outcomes of coherent microcomb generation in both cases of anomalous and normal dispersion. We are able to access this regime in microresonators via the high peak power of synchronous pulse-driving. For solitons in anomalous dispersion, we observe the formation of higher-order phase-matched dispersive waves (`Kelly-like' sidebands), where the folded dispersion crosses the frequency comb grid. In normal dispersion, we see the coexistence of switching wave fronts with Faraday instability-induced period-doubling patterns, manifesting as powerful satellite microcombs highly separated either side of the core microcomb while sharing the same repetition rate. This regime of dispersion-modulated phase matching opens a dimension of Kerr cavity physics and microcomb generation, particularly for the spectral extension and tuneability of microcombs in normal dispersion.