A modified Snyder–Mitchell model and its optical soliton solutions in nonlocal photorefractive media

Based on a modified Snyder–Mitchell model in nonlocal photorefractive media, spatiotemporal optical solitonary solutions are obtained and the formation and transmission characteristics of spatial solitons under the control of 2D optical lattice are studied by using self-similarity algorithm. The simulations show that the lattice order, modulation intensity and beam width significantly affect the shape and stability of spatial soliton in photonic lattice. The results have important guiding significance for the experimental study of spatial solitons.