磁性可调人工超常材料的表面等离子体激元  

Surface Plasmon Polaritons of Magnetically Tunable Metamaterials

作　　者：张惠芳[1] 赵玉静[1] 任海红[1] 王燕[1] 

机构地区：[1]上海大学理学院物理系,上海200444

出　　处：《光学学报》2011年第4期216-221,共6页Acta Optica Sinica

基　　金：国家自然科学基金(10974132);上海市教委科研项目(06AZ092)资助课题

摘　　要：针对p和s两种偏振状态,研究磁性可调左手材料(LHM)和常规介电材料界面的表面等离子体激元(SPP)。详细讨论在不同的外加磁场下,SPP的色散关系及波长、传播距离和在两种介质中的穿透深度等特征长度的变化规律。发现通过改变外加磁场的大小,可调节LHM的有效磁导率,从而改变SPP的特性。当增大外加磁场强度时,SPP的特征长度曲线都向短波方向移动。For the p and s polarizations, the surface plasmon polaritons （SPP） of magnetically tunable left-handed materials （LHM） and regular materials are investigated. The dispersion relations and characteristic lengths of SPP, including SPP wavelength, propagation distance of SPP and penetration depths of SPP in two mediums, are discussed in detail in different magnetic fields. It is shown that the properties of SPP can be controlled by the adjustment of effective magnetic permeability of metamaterials which is changed by changing the magnetic-field intensity. And the characteristic curves of SPP move to the region of short wavelength when the additional magnetic-field intensity increases.

关 键 词：材料 表面等离子体激元 磁性可调 色散关系 特征长度 

分 类 号：O441.4[理学—电磁学]