3D time-domain beam mapping for studying nonlinear dynamics in multimode optical fibers.

Date publication

janvier 2021

Journal

Optics letters

Auteurs

Membres identifiés du Cancéropôle Est :
Pr MILLOT Guy

Tous les auteurs :
Leventoux Y, Granger G, Krupa K, Tonello A, Millot G, Ferraro M, Mangini F, Zitelli M, Wabnitz S, Février S, Couderc V

Lien Pubmed

https://www.ncbi.nlm.nih.gov/pubmed/33362017

Résumé

Characterization of the complex spatiotemporal dynamics of optical beam propagation in nonlinear multimode fibers requires the development of advanced measurement methods, capable of capturing the real-time evolution of beam images. We present a new space-time mapping technique, permitting the direct detection, with picosecond temporal resolution, of the intensity from repetitive laser pulses over a grid of spatial samples from a magnified image of the output beam. By using this time-resolved mapping, we provide, to the best of our knowledge, the first unambiguous experimental observation of instantaneous intrapulse nonlinear coupling processes among the modes of a graded index fiber.

Référence

Opt Lett. 2021 01 1;46(1):66-69