Finite size effect of transmission property for metal hole arrays in subterahertz region
Finite size effect of transmission property for metal hole arrays in subterahertz region
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DOI：
10.1063/1.1702125
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发表时间：
2004-04-12
影响因子：
4
通讯作者：
Hangyo, M
中科院分区：
文献类型：
--
作者：
Miyamaru, F;Hangyo, M
研究了金属孔阵(MHA)在亚太赫兹(亚太赫兹)波段的高带通传输特性的机理。我们用太赫兹时域谱测量了不同孔数的透射谱，观察到由孔隙率归一化的峰值透过率随着孔数的增加而增加。MHA传输特性的这种有限尺寸效应归因于入射THz波与MHA表面激发的表面模之间的耦合效率随着孔数的增加而增加。(C)2004年美国物理研究所。
The mechanism of the high band-pass transmission property of metal hole arrays (MHA), which is metal slabs perforated periodically with circular holes, in the subterahertz (sub-THz) wave region has been investigated. We measured the transmission spectra varying the number of holes using a THz time domain spectroscopy and observed that the peak transmittance normalized by the porosity of holes increases with increasing the number of holes. This finite size effect of the transmission characteristics of the MHA is attributed to the increase of the coupling efficiency between the incident THz wave and the surface mode excited on the MHA surface with increasing the number of holes. (C) 2004 American Institute of Physics.