Experimental observation of spontaneous emission of space-time wavepacket in a multimode optical fiber
Abstract
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.
Keywords
Cite
@article{arxiv.2208.06598,
title = {Experimental observation of spontaneous emission of space-time wavepacket in a multimode optical fiber},
author = {Karolina Stefańska and Pierre Béjot and Karol Tarnowski and Bertrand Kibler},
journal= {arXiv preprint arXiv:2208.06598},
year = {2024}
}
Comments
6 pages, 4 figures