外加电场光折变有机聚合物串联回路中独立空间孤子对  

Separate spatial soliton pairs in biased series photorefractive polymer circuit

作　　者：吉选芒[1] 姜其畅[1] 刘劲松[2] 

机构地区：[1]山西运城学院物理与电子工程系,运城044000 [2]华中科技大学光电子科学与工程学院,武汉430074

出　　处：《物理学报》2011年第3期300-308,共9页Acta Physica Sinica

基　　金：山西省高等学校科技开发基金(批准号:200611042)资助的课题~~

摘　　要：对外加电场光折变有机聚合物串联回路中独立空间孤子对进行了理论研究,导出了在光折变有机聚合物串联回路中两光束传播的耦合方程,证明了串联回路中存在暗-暗、明-暗和明-明三种独立空间孤子对.在光束的空间展宽远小于有机聚合物宽度的极限条件下,暗-暗孤子对之间孤子入射光强的改变可相互影响到对方的包络和动态演化.对于明-暗孤子对,暗孤子通过光电流能影响明孤子,但明孤子不能影响暗孤子.明-明孤子对之间没有影响.This paper presents calculations based on the idea of photorefractive polymer spatial solitons,namely,screening solitons being formed in a biased series photorefractive polymer circuit consisting of two photorefractive polymer connected electronically by electrode leads in a chain with a voltage source. A system of two coupled equations is derived under appropriate conditions for two-beam propagation in the series photorefractive polymer circuit. The existence of dark-dark, bright-dark and bright-bright photorefractive polymer soliton pairs in such a circuit is proved. In the limit in which the optical wave has a spatial extent much less than the width of the photorefractive polymer,the two solitons in dark-dark soliton pairs can affect each other’s spatial profiles and the dynamical evolution by the light-induced current. For a brightdark soliton pair,the dark soliton can affect the other soliton by light-induced current,but the bright soliton cannot. The two solitons in bright-bright soliton pairs cannot affect each other.

关 键 词：非线性光学 光折变效应 光折变聚合物 空间孤子对 

分 类 号：O437[机械工程—光学工程]