激光与光电子学进展, 2017, 54 (3): 031603, 网络出版: 2017-03-08
近零折射率材料相位特性及应用 下载: 904次
Phase Characteristic of Near Zero Refractive Index Material and Its Application
材料 光子晶体 零折射率 时域有限差分法 等效折射率 materials photonic crystals zero refractive index finite-difference time-domain method equivalent refractive index
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。
Abstract
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.
丁俊伟, 梁斌明, 蒋强, 陆志仁, 庄松林. 近零折射率材料相位特性及应用[J]. 激光与光电子学进展, 2017, 54(3): 031603. Ding Junwei, Liang Binming, Jiang Qiang, Lu Zhiren, Zhuang Songlin. Phase Characteristic of Near Zero Refractive Index Material and Its Application[J]. Laser & Optoelectronics Progress, 2017, 54(3): 031603.