Sending femtosecond pulses in circles: highly nonparaxial accelerating beams
Résumé
We use caustic beam shaping on 100 fs pulses to experimentally generate nonparaxial accelerating beams along a 60° circular arc, moving laterally by 14 µm over a 28 µm 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.
Fichier principal
Sending_femtosecond_pulses_in_circles_2012_auteur.pdf (369.64 Ko)
Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...