入射光强对双光子亮屏蔽孤子相互作用的影响

Effects of incidence optical intensity on interaction of two-photon bright screening solitons

通过数值模拟的方法,研究了入射光强对外加电场双光子光折变介质中两亮屏蔽孤子之间相互作用的影响。结果表明:在一定的入射光强范围内,同相孤子相互吸引,并伴随着融合现象,两孤子发生融合的作用距离随着入射光强的增加先增加而后减小;反相孤子相互排斥,排斥作用随入射光强的增加而减小,在某一特定值达到最小值,然后随着入射光强的增加而加大。当两孤子的相位差准=π/2时,其相互作用过程中伴有能量转移,转移的能量与入射光强之间具有与排斥作用类似的非线性关系。

Effects of incidence optical intensity on the interactions of two bright screening spatial solitons in biased two-photon photorefractive media were numerically simulated. The result shows that two in-phase solitons attract each other and fuse in a certain optical intensity range. With the increasing of the optical intensity, the interactions distance of two solitons fusing increases firstly and decreases subsequently, the repulsion of two out-of-phase solitons decreases. At certain intensity, the repulsions reach its minimum and then continue increasing. Energy transfer will emerges with the interactions of two solitons at =π/2. The relation of energy transfer and incidence optical intensity is similar to nonlinearity of the repulsions.