Observation of Optical Spatial Solitons in a Highly Nonlocal Medium

Phys Rev Lett. 2004 Mar 19;92(11):113902. doi: 10.1103/PhysRevLett.92.113902. Epub 2004 Mar 17.


We report on the observation and quantitative assessment of self-trapped pulsating beams in a highly nonlocal nonlinear regime. The experiments were conducted in nematic liquid crystals and allow a meaningful comparison with the prediction of a scalar theory in the perturbative limit, while addressing the need for beyond-paraxial analytical treatments.