近零折射率材料相位特性及应用  

Phase Characteristic of Near Zero Refractive Index Material and Its Application

作　　者：丁俊伟 梁斌明[1] 蒋强[1] 陆志仁[1] 庄松林[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《激光与光电子学进展》2017年第3期217-222,共6页Laser & Optoelectronics Progress

摘　　要：采用时域有限差分(FDTD)方法研究了二维六边形排列结构的光子晶体近零折射率材料的相位特性,提出利用电场相位的空间频谱计算等效折射率的新方法,该方法可直观地反映电场相位的变化,解释了负折射的传播机理。利用该方法分析了横磁(TM)模波长和温度对等效折射率的影响。The phase characteristic of two dimensional hexagonal photonic crystal with near-zero refractive index is investigated by finite-difference time-domain （FDTD） method. A new method to calculate the equivalent refractive index is proposed by using the spatial spectrum of electric field phase. The proposed method can directly reflect the change of the electric field phase, which clarifies the transmission mechanism of the negative refraction. By this method, the influences of the wavelength of transverse magnetic （TM） mode and temperature on equivalent refractive index are studied.

关 键 词：材料 光子晶体 零折射率 时域有限差分法 等效折射率 

分 类 号：TH74[机械工程—光学工程]