1+2维强非局域非线性介质中高阶孤子的大相移  

Large phase shift of higher-order solitons in 1+2 Dimensional strongly nonlocal nonlinear medium

作　　者：白东峰[1] 倪江楠[1] 卢宏炎[1] BAI Dongfeng;NI Jiangnan;LU Hongyan(School of mechanical and electrical automation, Henan Polytechnic Institute, Nanyang 473009, Chin)

机构地区：[1]河南工业职业技术学院机电自动化学院

出　　处：《光学技术》2018年第3期344-348,共5页Optical Technique

基　　金：河南省科技厅科技攻关项目(172102210233);河南省基础与前沿技术研究计划项目(122300410416)

摘　　要：利用1＋2维S-M模型求得了强非局域非线性介质中厄米高斯孤子解析解。在强非局域条件下,解析解与精确数值解比较符合的很好,随着非局域程度的降低或高阶光束阶数的增大,解析解与数值解出现偏差。对高阶光束的传输特性进行了讨论,得到了高阶光束稳定传输时的相移,其大小与高阶光束的阶数有关,随着阶数的增大,相移减小。The analytic solution of Hermite-Gauss solitons in 1＋ 2 Dimensional strongly nonlocal nonlinear medium are obtained by using the S-M model. The analytical solutions are in good agreement with the exact numerical solutions in strongly nonlocal conditions. With the decrease of the nonlocal degree or the increase of the order of the higher order beams,the analytical solutions deviate from numerical solutions. The propagation characteristics of higher order beams are discussed,and the phase shift of higher order beams is obtained,the size of the phase shift is related to the order of the higher order beams,and the phase shift decreases with the increase of the order.

关 键 词：非局域非线性介质 相移 孤子 呼吸子 

分 类 号：O437[机械工程—光学工程]