Vortex revivals with trapped light
G. Molina-Terriza, Ll. Torner, E. Wrigth, J.J. García-Ripoll, V.M. Pérez-García
Optics Letters, 26, 1601-1603 (2001).
MOLAB authors
We predict that vortex dipoles nested in light beams trapped in graded-index media can undergo closed Berry trajectories, yielding periodic vortex annihilations and revivals along the light-propagation direction. The vortex revivals from vortex-free wave fronts are mediated by Freund stationary point bundles that carry the necessary Poincaré–Hopf indices. Vortex spiraling and spontaneous generation of circular-edge dislocations are also found to occur.