期刊
NEW JOURNAL OF PHYSICS
卷 25, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1367-2630/acadff
关键词
nonlinear optics; nonlinear Schrodinger equation; soliton molecules; resonant radiation; optical solitons
Nonlinear waveguides can support the formation of molecule-like two-color pulse compounds with distinct domains of anomalous dispersion. Perturbing these compounds leads to periodic amplitude and width variations resembling molecular vibrations. The dynamics of the pulse compounds transition from harmonic to nonlinear oscillations with increasing perturbation strength.
Nonlinear waveguides with two distinct domains of anomalous dispersion can support the formation of molecule-like two-color pulse compounds. They consist of two tightly bound subpulses with frequency loci separated by a vast frequency gap. Perturbing such a two-color pulse compound triggers periodic amplitude and width variations, reminiscent of molecular vibrations. With increasing strength of perturbation, the dynamics of the pulse compound changes from harmonic to nonlinear oscillations. The periodic amplitude variations enable coupling of the pulse compound to dispersive waves, resulting in the resonant emission of multi-frequency radiation. We demonstrate that the location of the resonances can be precisely predicted by phase-matching conditions. If the pulse compound consists of a pair of identical subpulses, inherent symmetries lead to degeneracies in the resonance spectrum. Weak perturbations lift existing degeneracies and cause a splitting of the resonance lines into multiple lines. Strong perturbations result in more complex emission spectra, characterized by well separated spectral bands caused by resonant Cherenkov radiation and additional four-wave mixing processes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据