Control of mutual spatial coherence of temporal features by reflexive photorefractive coupling

We analyze reflexive photorefractive coupling of an information-bearing beam carrying several distinct spatiotemporal features, with emphasis on the coupling-induced change in the mutual spatial coherence. We formulate equations describing evolution of the mutual correlation functions between different features and discuss their solutions both in the full two-dimensional case and in the limit leading to a one-dimensional description of the reflexive coupling geometry.