The self-bending and interactions of (1+1) dimension spatial solitons in photorefractive crystal

摘要

We investigate the features of the self-deflection of the screening-photorefractive spatial soliton and the influence of first-order and higher-order space charge field on the propagation characteristics by considering the diffusion effect, The results show that the center of the optical beam moves on a parabolic trajectory; As to the highter-order space charge field, the self-bending process is further enhanced by a factor that varies cubically with the applied field. The numerical study shows that the bending distance of the soliton beam center increase, reaching its maximum value at the characteristic temperature. Numerical investigations show that the in-phase interaction will result in the separation of two solitons from each other, As for the anti-phase interaction side, two solitons separated each other and delect simultaneously to the same side.