Improved spatial soliton theory on the example of photorefractive gallium arsenide

Abstract This article presents a critical look at the standard theory of bright and dark photorefractive screening solitons. We pay attention to commonly overlooked fact inconsistency in context accordance soliton solution with microscopic band transport models. Taking into account material equations for semi-insulating semiconductor (SI-GaAs) including nonlinear hot electrons, simple differential equation has been developed determine distribution refractive index changes localized optical beam. An amendment (1 + 1)D solitons proposed, which particularly should be used obtain plausible self-consistent solutions