温度对双光子光折变屏蔽光伏亮孤子相互作用的影响

Effects of temperature on the interaction of two-photon photorefractive sreening-photovoltaic bright spatial solitons

为了得到温度对外加电场的双光子光伏光折变介质中屏蔽光伏亮孤子之间相互作用的影响结果,将两束相干光束作为入射波,在不同温度下采用数值方法求解波传播方程。结果表明:室温下两个同相位孤子波的相互作用随温度变化伴有融合现象,当温度升高到350 K时两孤子可融合成一束稳定的孤子波;两个反相孤子相互排斥现象随温度变化而增强;相位差为π/2的两孤子,其相互作用随温度变化过程中有更多的能量转移,同时两孤子间的排斥现象随温度变化而增强。温度变化足够大时,两孤子作用过程中将发生崩溃现象。

In order to obtain the effect of temperature on the interactions of screening-photovoltaic bright spatial solitons in two-photon photovoltaic photorefractive media, taking the two mutually coherent optical beam as the input wave, the beam propagation equation is solved numerically under different temperatures The result shows that the interaction of two in-phase solitons still has fusions along with temperature varying in the room temperature range. With the raising of the temperature of media to 350 K, two in-phase solitons fuse a solitary wave. With the varying of the temperature, the repulsions of two out-of-phase solitons are increasing. The repulsions and the energy transferring increase with the varying of the temperature for the π/2 -phase-difference solitons. Two solitons crash in the interactions process when the varying is great enough.