We experimentally demonstrate the possibility of breaking up intense vortex light beams into stable and controllable sets of parametric solitons. We report observations performed in seeded second-harmonic generation, but the scheme can be extended to all parametric processes. The number of generated solitons is shown to be determined by a robust arithmetic rule.
Minardi, S., Molina, G., Di Trapani, P., Juan P. Torres, Torner, L. Soliton algebra by vortex beam splitting. "Optics letters", Juliol 2001, vol. 26, núm. 13, p. 1004-1006.