红外与毫米波学报, 2014, 33 (4): 344, 网络出版: 2014-09-01
基于中红外波段的等离子体金属孔天线
Plasmon antenna at mid-infrared made by metallic apertures
远场辐射 金属孔阵 中红外 偶极子阵列 表面等离激元 far-field radiation metallic apertures mid-infrared dipole arrays surface plasmon polariton
摘要
研究了周期性金属孔阵列的光学和远场辐射特性，实验发现所有样品在中红外波段都有两个透射峰，当金属孔径或者孔阵的晶格常数变大时，透过峰的中心频率发生红移.在透过率的中心频率附近，周期性的金属孔阵列表现出偶极子阵列的特性，其远场辐射特性随着孔径的减小或者孔阵列晶格常数的增大而增强.
Abstract
The transmission spectra and far-field radiation patterns of periodic metallic aperture arrays are studied in mid-infrared region. We find that the samples have two transmission bands in mid-infrared region. The central positions of transmission bands red-shifts with the increase of the hole-diameter or the lattice constant. The periodic metallic aperture arrays can behave as electrical dipole arrays at the central positions of the transmission bands. The radiation intensity in far-field is strong at the two frequencies. The intensity increase with the decrease of the hole diameter or the increase of the lattice constant.
杨理, 王斌, 曹玲玲, 叶永红. 基于中红外波段的等离子体金属孔天线[J]. 红外与毫米波学报, 2014, 33(4): 344. YANG Li, WANG Bin, CAO Ling-Ling, YE Yong-Hong. Plasmon antenna at mid-infrared made by metallic apertures[J]. Journal of Infrared and Millimeter Waves, 2014, 33(4): 344.
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