主客体式光折变聚合物中空间明孤子的动态演化特性

Dynamical evolution of spatial bright solitons propagating in guest-host photorefractive polymers

研究了主客体式光折变聚合物中空间明孤子的动态演化特性 ,讨论了振幅微扰和宽度微扰对其传播特性的影响 .结果表明 ,入射波为明孤子波时 ,能够在聚合物中稳定直线传播 ;在较小微扰情况下 ,孤子波经短距离传播后能够演化为明孤子波 ;当微扰比较大时 ,光波不能在聚合物中稳定传播 。

Dynamical evolution of spatial bright solitons propagating in a guest host photorefractive polymer was studied, and the effects of perturbations in amplitude and width on the stability of the soliton were also discussed.When an incident optical beam is a bright soliton,this beam propagates along a linear path with its shape kept unchanged.When the perturbations in amplitude and width are very small,the incident beam can reshape itself and try to evolve into a bright soliton while it cannot propagate stably in the polymer when the perturbation is larger.