二维正方格子磁性光子晶体的界面传导模  

Guide modes in magnetic photonic crystal heterostructuresin two-dimensional square lattices

作　　者：车明[1] 周云松[1] 王福合[1] 顾本源 

机构地区：[1]首都师范大学物理系,北京100037 [2]中国科学院物理研究所,北京100080

出　　处：《物理学报》2005年第5期2096-2101,共6页Acta Physica Sinica

基　　金：国家重点基础研究发展计划 (批准号 :0 0 1CB610 40 );北京市教育委员会科技发展计划面上项目 (批准号 :KM2 0 0 3 10 0 2 810 8)资助的课题 .~~

摘　　要：采用平面波展开加超元胞方法计算了二维正方格子磁性光子晶体的光子带隙结构 ,其中散射子的形状分别为长方形 ,正方形 ,六角形和圆形 .结果表明绝对带隙宽度和其宽高比远大于同种结构的非磁性光子晶体 .在此基础上 ,构成了混合型异质结 ,并计算了相应的传导模 ,发现了理想的界面传导模 ,而且当磁性散射子为长方形、圆形、六角形散射子时产生传导模都不需要晶格畸变 ,这也是磁性光子晶体异质结所具备的优点 .The photonic band structure of two-dimensional magnetic photonic crystals(MPCs) composed of magnetic pillars in different shapes (rectangular, square, hexagonal and circular) sitting on square lattice is investigated by use of the plane wave expansion method. The optimal MPCs, which possess the largest photonic band gap and the lowest frequency in the middle of the photonic band gap, are picked up when scanning the parameters (filling factor, orientation angle, and permeability). Based on the results, we construct theoretically the mixed MPC heterostructures and investigate the guide modes at interface. The guide modes along the interface of the heterostructures can be generated without any lattice distortion when the scattering pillars are in shapes of rectangle, hexagon, and circle.

关 键 词：光子晶体 磁性界面 传导模 带隙结构 

分 类 号：O734[理学—晶体学]