We report what is believed to be the first detailed experimental observation of the dynamic inversion of the topological charge of an optical vortex under free-space propagation. The vortex self-transformation occurs through continuous deformation of the noncanonical strength of the corresponding screw wave front dislocation, and is mediated by the occurrence of an extremely sharp turn in a Berry vortex trajectory, which observed at a Freund critical foliation appears as an edge-line dislocation orthogonal to the propaga tion direction, at a crucial point of the light evolution.
|Original language||English (US)|
|Title of host publication||Optical Angular Momentum|
|Number of pages||4|
|State||Published - Apr 19 2016|
ASJC Scopus subject areas
- Physics and Astronomy(all)