论文标题
多模光纤中时空波袋自发发射的实验性观察
Experimental observation of spontaneous emission of space-time wavepacket in a multimode optical fiber
论文作者
论文摘要
我们提供了从理论到实验的完整分析，即当在多模纤维中非线性脉冲非线性繁殖时，X型的离散锥形波的自发出现（即，局部2D+1个时空波件）。特别是，我们揭示了这种时空现象对应于从非线性传播过程中形成的不稳定局部波结构中的宽带跨模式分散波发射。理论相匹配预测在商业上可用的级数多模纤维中在实验和数值上得到证实。我们的结果提供了对多维色散光学系统中非线性波发射的相匹配辐射的一般理解。
We provide a complete analysis, from theory to experiment, of the spontaneous emergence of a discretized conical wave of X-type (i.e., a localized 2D+1 space-time wavepacket) when an intense ultrashort pulse nonlinearly propagates in a multimode fiber. In particular, we reveal that this spatiotemporal phenomenon corresponds to broadband intermodal dispersive wave emission from an unsteady localized wave structure formed during nonlinear propagation. Theoretical phase-matching predictions are experimentally and numerically confirmed in a commercially-available step-index multimode fiber. Our results provide a general understanding of phase-matched radiations emitted by nonlinear waves in multidimensional dispersive optical system.
