Wavelength domains in bulk Kerr media

Summary form only given. In this paper we consider optical phenomena in two transverse dimensions that arise from nonlinear coupling between two or more copropagating beams of different wavelengths in self defocusing, isotropic Kerr media. We find that the different wavelengths form distinct, stable domain type solitary waves bordered by sharp domain walls that are analogous to polarisation domain walls (PDWs).<
>