RT info:eu-repo/semantics/article T1 Helmholtz solitons in diffusive Kerr-type media A1 Sánchez Curto, Julio A1 Chamorro Posada, Pedro AB Nonlinear interfaces separating two diffusive Kerr-type media exhibit dual switching between total internal reflection and transmission. This property is found within a weakly nonlocal regime when both a nonparaxial treatment of the problem and a full two-dimensional model for carrier diffusion are assumed. The theoretical model is shown to predict an effective cubic-quintic nonlinearity with competing terms that produces such property. The validity of the analysis is contrasted with a full set of numerical simulations. PB American Physical Society YR 2016 FD 2016 LK http://uvadoc.uva.es/handle/10324/25963 UL http://uvadoc.uva.es/handle/10324/25963 LA eng NO Phys. Rev. A 93, 033826 (2016) DS UVaDOC RD 17-jun-2024