2-D Terahertz Metallic Photonic Crystals in Parallel-Plate Waveguides
2-D Terahertz Metallic Photonic Crystals in Parallel-Plate Waveguides
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DOI：
10.1109/tmtt.2007.892798
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发表时间：
2007-04
影响因子：
4.3
通讯作者：
Yuguang Zhao;D. Grischkowsky
中科院分区：
文献类型：
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作者：
Yuguang Zhao;D. Grischkowsky
采用太赫兹时域光谱法对无缺陷、点缺陷和F-P缺陷的二维金属光子晶体进行了表征。利用具有单tem模式传播的金属平行板波导（PPWG）作为模拟自由空间中二维光子晶体的工具。通过在SU-8聚合物柱阵列上涂覆金，制备了二维金属光子晶体结构。在PPWG内的光子晶体中观察到较宽的太赫兹带隙。实验测量结果完全符合二维光子晶体理论，没有缺陷。在有缺陷的样品中观察到缺陷模式，表明F-P缺陷具有很强的局部化效应
2-D metallic photonic crystals without defects, with point defects, and with a Fabry-Perot (F-P) defect are characterized by terahertz time-domain spectroscopy. The metal parallel-plate waveguide (PPWG) with single TEM-mode propagation is used as a tool to simulate 2-D photonic crystals in free space. The 2-D metallic photonic-crystal structures were fabricated by coating Au on an SU-8 polymer cylinder array. Wide terahertz bandgaps were observed in the photonic crystals within the PPWG. The experimental measurements have excellent agreement to 2-D photonic-crystal theory without defects. Defect modes are observed in the samples with defects and show the F-P defect has a strong localization effect