PHOTONIC BAND-STRUCTURE OF 2-DIMENSIONAL SYSTEMS - THE TRIANGULAR LATTICE
PHOTONIC BAND-STRUCTURE OF 2-DIMENSIONAL SYSTEMS - THE TRIANGULAR LATTICE
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DOI：
10.1103/physrevb.44.8565
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发表时间：
1991-10-15
影响因子：
3.7
通讯作者：
MARADUDIN, AA
中科院分区：
文献类型：
--
作者：
PLIHAL, M;MARADUDIN, AA
利用位置相关的介电常数和平面波方法，计算了由圆形截面的平行介质柱组成的周期性阵列中电磁波的光子带结构，这些介质柱与垂直平面相交形成三角形晶格。 这些棒嵌入具有不同介电常数的背景介质中。 假设电磁波在垂直于杆的平面内传播，并考虑波的两种偏振。 绝对间隙中得到的能带结构中发现的两种偏振波，和这些间隙的宽度的依赖性的杆和背景的介电常数的比率，并在由杆占据的总体积的分数，进行了研究。
By the use of a position-dependent dielectric constant and the plane-wave method, we have calculated the photonic band structure for electromagnetic waves in a structure consisting of a periodic array of parallel dielectric rods of circular cross section, whose intersections with a perpendicular plane form a triangular lattice. The rods are embedded in a background medium with a different dielectric constant. The electromagnetic waves are assumed to propagate in a plane perpendicular to the rods, and two polarizations of the waves are considered. Absolute gaps in the resulting band structures are found for waves of both polarizations, and the dependence of the widths of these gaps on the ratio of the dielectric constants of the rods and of the background, and on the fraction of the total volume occupied by the rods, is investigated.