Solitonic characteristics of optical Airy beams nonlinear propagation in biased centrosymmetric photorefractive medium

We have conducted numerical examinations on the characteristics of off-shooting solitons (OSS) arising from optical Airy beams in a biased centrosymmetric photorefractive medium, along with their relationship with conventional spatial solitons in such medium. As a result of this study, OSS exhibits qualities resembling those of photorefractive spatial solitons. The existence of OSS is found to be slightly shifted from the center of the propagation axis and varies with the intensity of the Airy beam sent into the medium. Under fixed nonlinear conditions, there exists a range of intensity values for which the characteristics of OSS most closely resemble those of photorefractive spatial solitons. At low-intensity regimes, OSS exhibit lower amplitudes and wider widths compared to the spatial soliton. The OSS profile is lost and displays spatial breathing along the propagation axis under strong power or nonlinear conditions. Subsequently, diffusive nonlinearities cause OSS to undergo deflection, resembling the self-deflection recently observed in photorefractive spatial solitons. The characteristics of OSS found in this study suggest that OSS can be classified as novel spatial solitons in the biased centrosymmetric photorefractive medium.