Light trajectory in Bessel-Gauss vortex beams
| Affiliation auteurs | !!!! Error affiliation !!!! |
| Titre | Light trajectory in Bessel-Gauss vortex beams |
| Type de publication | Journal Article |
| Year of Publication | 2015 |
| Auteurs | Xie C, Giust R, Jukna V, Furfaro L, Jacquot M, Lacourt P-A, Froehly L, Dudley J, Couairon A, Courvoisier F |
| Journal | JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION |
| Volume | 32 |
| Pagination | 1313-1316 |
| Date Published | JUL 1 |
| Type of Article | Article |
| ISSN | 1084-7529 |
| Résumé | We investigate the early stage of propagation of Bessel-Gauss vortex beams where a transition regime shows a progressive lateral expansion of the main intensity ring before reaching a diffraction-free regime. The eikonal equation is used to characterize the beam structure. The beam is featured by a family of hyperboloids with variable waists, generating a tapered tubular caustic. Our analytical results are in excellent agreement with numerical and experimental results. We show the transition regime can be well eliminated by using hollow input beams. (C) 2015 Optical Society of America |
| DOI | 10.1364/JOSAA.32.001313 |