基于运动光栅光折变双光束耦合的刚性全息明孤子的动态演化  

Dynamical evolution of rigid holographic bright solitons based on photorefractive two-wave mixing with moving grating

作　　者：刘劲松[1] 杜泽明[1] 

机构地区：[1]华中科技大学激光技术国家重点实验室,武汉430074

出　　处：《物理学报》2005年第6期2739-2744,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10174025);教育部科学技术研究重点项目(批准号:01118)资助的项目.~~

摘　　要：研究基于运动光栅双光束耦合的耗散光折变系统中的空间光孤子的动态演化问题.数值计算表明,系统参数同这种孤子的稳定性密切相关.在某组系统参数下,孤子可以在晶体内稳定传播足够远的距离.双光束耦合的相位与强度耦合系数之比越大,孤子的稳定性越好.讨论了将这种系统应用于光学开关、中继及分路器件的可能性.It has been investigated that dynamical evolutions of spatial optical solitons in dissipative photorefractive systems based on two-wave mixing with a moving grating. Numerical results show that the stability of rigid photorefractive holographic solitons in such systems depends strongly on the system parameters. The soliton for some sets of system parameters can propagate stably in the crystal over a distance that is long enough. The larger the ratio of the phase to intensity coupling coefficient of two-wave mixing, the better the stability of solitons. Potential application in optical switches, repeaters or splitters is discussed.

关 键 词：空间光孤子 光折变非线性光学 耗散系统 全息光栅 

分 类 号：O431.2[机械工程—光学工程]