Spatial and spectral nonlinear shaping of multimode waves
Authors: Krupa K., Tonello A., Bendahmane A., Dupiol R., Shalaby BM., Fabert M., Barthelemy A., Millot G., Wabnitz S., Couderc V.
Autors Affiliation: Univ Limoges, CNRS, XLIM, UMR 7252, 123 Ave A Thomas, F-87060 Limoges, France; Univ Bourgogne Franche Comte, CNRS, ICB, UMR 6303, 9 Ave A Savary, F-21078 Dijon, France; Tanta Univ, Dept Phys, Fac Sci, Tanta, Egypt; Univ Brescia, Dipartimento Ingn Informaz, Via Branze 38, I-25123 Brescia, Italy; INO CNR, Via Branze 38, I-25123 Brescia, Italy
Abstract: We demonstrate a novel nonlinear dynamics of multimode fibers that reshapes their spectral and spatial beam profiles, based on spatiotemporal modulation instability. Sidebands ranging from the visible to the near-infrared are carried by one and the same spatial bell-shaped profile.
KeyWords: nonlinear optics; multimode optical fibers; parametric processes; four-wave mixing; spatiotemporal dynamics