| 太赫兹波在二维光子晶体中的传播特性 |
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| 引用本文： | 梁兰菊,闫昕.太赫兹波在二维光子晶体中的传播特性[J].量子电子学报,2008,25(4):462-466. |
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| 作者姓名： | 梁兰菊 闫昕 |
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| 作者单位： | 1. 枣庄学院物理与电子工程系,山东,枣庄,277160
2. 枣庄学院物理与电子工程系,山东,枣庄,277160;郑州大学河南省激光与光电信息技术重点实验室,河南,郑州,450052 |
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| 基金项目： | 山东省教育厅资助项目，山东省科技厅资助项目 |
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| 摘 要： | 为了得到太赫兹波在二维三角晶格光子晶体中的传播特性,利用平面波展开法数值模拟了三角晶格能带结构和态密度分布,得出E偏振当填充率f=0.9069和H偏振f=0.7346时出现最大光子带隙,在f=0.8358出现最大完全光子带隙.计算表明,增加介电常数的差值,太赫兹波在三角晶格光子晶体中传播的带隙增加了,光子晶体态密度的分布验证了存在光子带隙的范围.研究结果为太赫兹波器件的开发提供了理论依据.
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| 关 键 词： | 激光技术 太赫兹波 平面波展开法 三角晶格 光子能带结构 光子晶体态密度 |
| 收稿时间： | 2007/8/27 |
Propagation characteristics of THz waves in 2D lattice photonic crystal |
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| LIANG Lanju,YAN Xin.Propagation characteristics of THz waves in 2D lattice photonic crystal[J].Chinese Journal of Quantum Electronics,2008,25(4):462-466. |
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| Authors: | LIANG Lanju YAN Xin |
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| Affiliation: | LIANG Lan-ju~1 YAN Xin~(1,2) (1 Department of Physics , Electronic Engineering,Zaozhuang University,Zaozhuang 277160,China,2 Henan Provincial Key Laboratory of Laser , Opto-electric Information Technology,Zhengzhou University,Zhengzhou 450052,China) |
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| Abstract: | In order to gain the propagation characteristics of two-dimensional triangular lattice photonic crystal in THz range,the band gap structure and density of photon states were calculated by plane wave expansion method (PWM).It was found that the maximum photonic band gap was observed when/=0.9069 in E polarization and f=0.7364 in H polarization,and the maximum absolute photonic band gap was gained when f=0.8358.It was found that large photonic band gap can be obtained by increasing D-value of dielectric const... |
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| Keywords: | laser technique THz wave plane wave expansion method triangular lattice photonic band structure photon density of states |
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