We report the first experimental observation, to our knowledge, of the self-trapping of light in walk-off-compensating optical tandems. The experiment was conducted with picosecond light pulses in a ten-plate optically contacted tandem made of potassium titanyl phosphate prepared for phase matching along a special geometry featuring a huge local walk-off. The observation should open the door to the exploration of multicomponent soliton formation in new classes of materials and settings.
Carrasco, S., Petrov, D., Juan P. Torres, Torner, L., Kim, H., Stegeman, G., Zondy, J. Observation of self-trapping of light in walk-off compensating tandems. "Optics letters", Febrer 2004, vol. 29, núm. 4, p. 382-384.