Effect of temperature on the self-deflection of two-photon bright screening photovoltaic solitons

Effect of temperature on the dynamical evolution and self-deflection characteristics of bright screening photovoltaic spatial solitons in two-photon photovoltaic photorefractive media was investigated.Taking the bright solitons as the input solitary beam,numerically solving the beam propagation equation,it was found that the intensity profile and the full-width at half maximum of bright screening photovoltaic spatial solitons decreased with the raising of the temperature in a certain range of temperature.When the temperature of crystals changed in a small range,the stability of solitons could be persisted by overcoming the small perturbation.Solitons would become unstable or collapse when the crystal changed in a large range.The results show that the bending distance of the bright solitary beam centre increases with temperature rise,then reaches its maximum value at a specific temperature,and after that,decreases as temperature continuously rises.All of these results are benefit for the development of theory of two-photon spatial solitons.