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Differences of Band Gap Characteristics of Square and Triangular Lattice Photonic Crystals in Terahertz Range

Differences of Band Gap Characteristics of Square and Triangular Lattice Photonic Crystals in Terahertz Range
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摘要 Band gap characteristics of the photonic crystals in terahertz range with square lattice and triangular lattice of GaAs cylinders are comparatively studied by means of plane wave method （PWM）. The influence of the radius on the band gap width is analyzed and the critical values where the band gap appears are put forward. The results show that the maximum band gap width of photonic crystal with triangular lattice of GaAs cylinders is much wider than that of photonic crystal with square lattice. The research provides a theoretic basis for the development of terahertz （THz） devices. Band gap characteristics of the photonic crystals in terahertz range with square lattice and triangular lattice of GaAs cylinders are comparatively studied by means of plane wave method （PWM）. The influence of the radius on the band gap width is analyzed and the critical values where the band gap appears are put forward. The results show that the maximum band gap width of photonic crystal with triangular lattice of GaAs cylinders is much wider than that of photonic crystal with square lattice. The research provides a theoretic basis for the development of terahertz （THz） devices.
作者 Jie Zha Zhi-Yong Zhong Huai-Wu Zhang Qi-Ye Wen Yuan-Xun Li
机构地区 School of Microelectronics and Solid-State Electronics
出处 《Journal of Electronic Science and Technology of China》 2009年第3期268-271,共4页 中国电子科技（英文版）
基金 supported by the National Basic Research Program (973) under Grant No 2007CB31407
关键词 Band gap structure critical value expansion method photonic crystals plane wave GaAs terahertz waves Band gap structure, critical value, expansion method, photonic crystals, plane wave GaAs, terahertz waves
分类号 TN304.23 [电子电信—物理电子学] O734 [理学—晶体学]
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参考文献10

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Journal of Electronic Science and Technology of China
2009年 第3期

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