Superpositions of Laguerre-Gaussian Beams in Strongly Nonlocal Left-handed Materials  

作　　者：钟卫平 Milivoj Beli 王丽杨 

机构地区：[1]Department of Electronic Engineering, Shunde Polytechnic [2]Texas A & M University at Qatar

出　　处：《Communications in Theoretical Physics》2010年第4期749-754,共6页理论物理通讯（英文版）

基　　金：Supported by the Science Research Foundation of Shunde Polytechnic (2008-KJ06), China;Work at the Texas A&M University at Qatar is supported by the NPRP 25-6-7-2 project with the Qatar National Research Foundation

摘　　要：We present beam solutions of the strongly nonlocal nonlinear Schrodinger equation in left-handed mate- rims （LHMs）. Different Laguerre-Ganssian （LG） necklace beams, such as symmetric and asymmetric single layer and multilayer necklace beams are created by the superposition of two single beams with different topological charges. Such superpositions are then propagated through LHMs, displaying linear diffraction. It is found that the superposition of two LGnm beams with opposite topological charges does not show rotational behavior and that there exists rotation for other topological charge combinations. Our theory predicts that the accessible solitons cannot exist in LHMs.

关 键 词：Laguerre-Gausssian beam the strongly nonlocal nonlinear left-handed material 

分 类 号：O435[机械工程—光学工程]