弱非局域介质中1+2维sech型损耗空间光孤子  

1+2 D Sech Lossy Soliton in Weakly Nonlocal Media

作　　者：李昌华[1] 王形华[1] 

机构地区：[1]赣南师范学院物理与电子信息学院,江西赣州341000

出　　处：《赣南师范学院学报》2010年第3期41-44,共4页Journal of Gannan Teachers' College(Social Science(2))

摘　　要：应用变分法研究了1+2维sech型光束在含有小损耗且具有e指数响应的弱非局域非线性介质中的传输特性,得到了光束各参量的演化方程、演化规律和一个临界功率.在介质损耗足够小的前提下,当光束初始功率等于临界功率时,得到了一个除了产生相移外,束宽大小可近似保持不变的1+2维sech型损耗空间光孤子.The transmission properties of 1＋2 dimensional sech-type beam is investigated by means of variational method in non-local nonlinear media with a small loss and a weak response for e index,obtained the evolution equation and evolution laws for the beam parameters,and a critical power.In the case of small dielectric loss,when the beam and the initial power is equal to the critical power,there exit a phase shift and 1＋2 dimensional sech-type loss spatial soliton.

关 键 词：非局域非线性Schrdinger方程 变分法 弱非局域介质 sech型光束 损耗空间光孤子 

分 类 号：O437[机械工程—光学工程]