太赫兹波段三角晶格二维光子晶体的传输特性

梁兰菊

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太赫兹波段三角晶格二维光子晶体的传输特性

论文 | 更新时间：2020-08-12

- 太赫兹波段三角晶格二维光子晶体的传输特性
- Propagation Characteristic of 2D Triangular Lattice Photonic Crystal in THz Range
- 发光学报 2009年30卷第1期页码：35-39
- 作者机构：
  
  1. 枣庄学院物理与电子工程系,山东枣庄,277160
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梁兰菊. 太赫兹波段三角晶格二维光子晶体的传输特性[J]. 发光学报, 2009,30(1):35-39.

LIANG Lan-ju. Propagation Characteristic of 2D Triangular Lattice Photonic Crystal in THz Range[J]. Chinese Journal of Luminescence, 2009,30(1):35-39.
梁兰菊. 太赫兹波段三角晶格二维光子晶体的传输特性[J]. 发光学报, 2009,30(1):35-39. DOI：

LIANG Lan-ju. Propagation Characteristic of 2D Triangular Lattice Photonic Crystal in THz Range[J]. Chinese Journal of Luminescence, 2009,30(1):35-39. DOI：

摘要

用平面波展开法研究了太赫兹(THz)波在二维三角晶格光子晶体中的传输特性。数值计算了以硅为背景的空气圆柱构成的二维三角晶格光子晶体的能带结构和态密度,计算表明在介质圆柱半径r=0.47a(a为空气介质柱的晶格常数)出现最大完全光子带隙,带隙宽度为0.070 1 THz;当r=0.49a和r=0.45a时,E偏振和H偏振分别出现最大光子带隙,带隙宽度分别0.102 2,0.192 3 THz。光子晶体能态密度的分布也表明了存在光子带隙的范围。研究结果为THz器件的开发提供了理论依据。

Abstract

Propagation characteristic of two-dimensional triangular lattice photonic crystals in THz range was studied by using PWM. The band gap structure and density of photon states of two-dimensional triangular lattice photonic crystals constructed from air in Si dielectric matrix was calculated. It was found that when the radius was 0.47a, it can generate maximum absolute photonic band gap with 0.070 1 THz, and it can generate maximum photonic band gap with 0.102 2 and 0.192 3 THz when the radius was 0.49a and 0.45a, respectively. The photonic band structure was also shown by the photonic density of states. This research provides a theoretic basis for the development of THz devices.

关键词

太赫兹波光子晶体平面波展开法三角晶格

Keywords

THz wavephotonic crystalplan wave expansion methodtriangular lattice

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