Transverse modulational instability is investigated in undoped nematic liquid crystals, a highly nonlocal material system encompassing a reorientational nonlinear response. Using an elliptic Gaussian excitation, we observe the one-dimensional development of transverse patterns eventually leading to beam breakup, filamentation, and spatial solitons, both in the cases of spatially coherent and partially incoherent excitations.
Assanto, G., Peccianti, M., Conti, C. (2004). One-dimensional transverse modulational instability in nonlocal media with a reorientational nonlinearity RID F-7127-2011. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 10(5), 862-869 [10.1109/JSTQE.2004.835999].