手征材料构成的简立方光子晶体光子带结构计算──平面波法

Photonic Band Structure of Simple Cubic Lattice in Chiral Medium Plane Wave Method

发展了适于计算由手征材料组成的光子晶体的光子带结构的平面波法。在此基础上，研究了由手征材料组成的简立方光子晶体的光子带结构。计算表明：手征材料“球形原子”在电介质中排列所组成的简立方光子晶体和电介质“球形原子”在手征材料中排列所组成的简立方光子晶体，不仅都存在光子带隙，而且存在截止频率，在该频率以下的区域无传播模存在。本文也讨论了这种光子晶体的潜在应用。

The plane wave method is developed for calculating photonic band structure in chiral medium, at this basis, the photonic band structure of simple cubic lattice made of chiral medium is calculated. Results show that cutoff frequencies below which there are no propagating modes appear in both of two kinds scc lattices which are the array of “chiral spherical atoms” in dielectric material and the array of “dielectric spherical atoms” in chiral matrix. There is a cutoff grequency below which there are no propagating modes. The potential application of the photonic lattice is discussed.