含负折射率材料的Thue-Morse序列结构的光学透射谱  

Optical Transmission Spectrum of Thue-Morse structure Containing Negative Index Materials

作　　者：罗黎平[1] 刘念华[1] 

机构地区：[1]南昌大学物理系,南昌330047

出　　处：《光子学报》2005年第11期1615-1619,共5页Acta Photonica Sinica

基　　金：国家自然科学基金(60268001);江西省自然科学基金(0312004);江西省主要学科学术与技术带头人项目;江西省科技攻关计划项目(20041G0003300)资助

摘　　要：讨论了由正折射率材料和具有色散的负折射率材料构成的ThueMorse序列结构的透射谱,用传输矩阵元的递推关系式计算透射率.数值计算结果表明,这种系统存在一个n=0带隙,它与Bragg带隙相比,对入射角变化和电场偏振方向的变化更不敏感.此外,带隙的位置不随序列阶数的不同而变化.同时,对TM序列结构完全透射态的场分布进行了研究,发现光强的分布具有与晶格结构相似的分布.The transmission spectrum of Thue-Morse photonic crystals constructed by positive and negative index materials alternately was investigated. The transmittance was calculated by the recursion relations of the transfer matrix elements. Numerical analyses show that a zero -↑n gap exists in the TM multilayer system. Comparing with the Bragg gap,this gap is less sensitive to the incident angle and the polarization. The position of gap will not change with the order number of the. TM sequence. Meanwhile, the field distribution is investigated for completely transparent states. The field distributions are analogous to the lattice structure.

关 键 词：光子晶体 负折射率 非周期结构 

分 类 号：O431[机械工程—光学工程]