Sending femtosecond pulses in circles: highly nonparaxial accelerating beams.
Fiche publication
Date publication
mai 2012
Auteurs
Membres identifiés du Cancéropôle Est :
Dr FROEHLY Luc
Tous les auteurs :
Courvoisier F, Mathis A, Froehly L, Giust R, Furfaro L, Lacourt PA, Jacquot M, Dudley JM
Lien Pubmed
Résumé
We use caustic beam shaping on 100 fs pulses to experimentally generate nonparaxial accelerating beams along a 60 degrees circular arc, moving laterally by 14 microm over a 28 microm propagation length. This is the highest degree of transverse acceleration reported to our knowledge. Using diffraction integral theory and numerical beam propagation simulations, we show that circular acceleration trajectories represent a unique class of nonparaxial diffraction-free beam profile which also preserves the femtosecond temporal structure in the vicinity of the caustic.
Référence
Opt Lett. 2012 May 15;37(10):1736-8