THEORY OF PHOTON BANDS IN 3-DIMENSIONAL PERIODIC DIELECTRIC STRUCTURES
THEORY OF PHOTON BANDS IN 3-DIMENSIONAL PERIODIC DIELECTRIC STRUCTURES
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DOI：
10.1103/physrevlett.64.1239
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发表时间：
1990-03-12
影响因子：
8.6
通讯作者：
SALEHPOUR, MR
中科院分区：
文献类型：
--
作者：
SATPATHY, S;ZHANG, Z;SALEHPOUR, MR
最近的实验发现，在周期性的电介质结构中存在类似于固体中的电子带的“光子带”。本文用平面波方法，在标量波近似下研究了介电常数为ε a的球形“原子”周期性排列在背景介质ε B中的光子带的性质。标量波计算预测了ε a/ε B或ε B/ε a = 1/3左右的谱中的间隙。讨论了波函数的性质和对称性。
Recent experiments have found the existence of ‘‘photon bands’’in periodic dielectric structures analogous to the electron bands in the solid. Using a plane-waves method, we study in the scalar-wave approximation the nature of the photon bands in structures where spherical ‘‘atoms’’of dielectric constant ε a are periodically arranged in a background dielectric ε b. The scalar-wave calculation predicts gaps in the spectrum for ε a/ε b or ε b/ε a≳ 3 or so. The nature and symmetry of the wave functions is also discussed.