2026-09-15T14:27:21Zhttps://gredos.usal.es/oai/request

oai:gredos.usal.es:10366/1469252025-04-30T20:35:19Zcom_10366_133237com_10366_4512com_10366_3823col_10366_133238

Alonso Fernández, Benjamín Sola Larrañaga, Iñigo Juan Román, Julio San Varela, Óscar Roso Franco, Luis 2021-06-24T07:36:11Z 2021-06-24T07:36:11Z 2011-08 Benjamín Alonso, Íñigo J. Sola, Julio San Román, Óscar Varela, and Luis Roso, "Spatiotemporal evolution of light during propagation in filamentation regime," J. Opt. Soc. Am. B 28, 1807-1816 (2011) 0740-3224 http://hdl.handle.net/10366/146925 10.1364/JOSAB.28.001807 1520-8540 The full description of the evolution of light during its nonlinear propagation represents a valuable help to the complete understanding of important nonlinear phenomena such as light filamentation. In this paper we present a comparison between theoretical and experimental results of the spatiotemporal structure of a light filament at different propagation distances. In order to obtain the experimental spatiotemporal structure, we have used a technique based on spatially resolved spectral interferometry called STARFISH, for spatiotemporal amplitude-and-phase reconstruction by Fourier transform of interference spectra of high-complex beams. We have been able to observe important nonlinear pulse dynamics during the nonlinear propagation, including pulse splitting and the subsequent competition among the pulses that result from the splitting, obtaining a full insight into the general nonlinear behavior eng info:eu-repo/semantics/openAccess Electric fields Fiber optic couplers Fourier transform interferometry Fourier transforms Light filaments Nonlinear optics Spatiotemporal evolution of light during propagation in filamentation regime info:eu-repo/semantics/article