改变光子晶体表面结构对负折射透射光强的影响  

Effect of the Change of Surface Structure of Photonic Crystals on Intensity of Transmitted Light

作　　者：毛宇[1] 童元伟[1] 

机构地区：[1]上海理工大学理学院,上海200093

出　　处：《光子学报》2010年第9期1562-1566,共5页Acta Photonica Sinica

基　　金：国家重点基础研究发展计划(2005CB724304);国家自然科学基金(60777045)资助

摘　　要：以砷化镓圆形介质柱在空气中构成二维六边形排列结构的光子晶体为例,利用时域有限差分法模拟研究了光子晶体表面结构改变对负折射透射光强的影响.模拟结果表明:针对同一结构光子晶体,在可产生负折射现象的入射光频率范围,改变光子晶体表面两侧圆形介质柱的半径和顺向侧移两侧表面最外层圆形介质柱都会均对负折射透射光强产生影响.The photonic crystals of hexagonal structure with GaAs circle rods are taken as examples to illuminate dependence of intensity of transmitted light on the change of surface structure of the PC. Simulation with finite difference time domain method shows that the change of radius of outside rods and the displacement of the outermost layer circle rods will have effect on intensity of negative transmitted light, in frequency range where negative refraction exist for the same photo crystal.

关 键 词：负折射 光子晶体 表面结构 透射光强 

分 类 号：O482.3[理学—固体物理]