We demonstrate second-band bright vortex-array solitons in photonic lattices. This constitutes the first experimental observation of higher-band solitons in any 2D periodic system. These solitons possess complex intensity and phase structures, yet they can be excited by a simple highly localized vortex-ring beam. Finally, we show that the linear diffraction of such beams exhibits preferential transport along the lattice axes.
|Original language||English (US)|
|Journal||Physical review letters|
|State||Published - Jul 29 2005|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)