Anomalous microwave reflection from a metal surface induced by spoof surface plasmon

doi:10.1088/1674-1056/21/1/017301

中国物理B ›› 2012, Vol. 21 ›› Issue (1): 17301-017301.doi: 10.1088/1674-1056/21/1/017301

Anomalous microwave reflection from a metal surface induced by spoof surface plasmon

曹金祥¹, 吕铀¹, 刘磊¹, 杜寅昌¹, 汪建¹, 王亮²

(1)Key Laboratory of Basic Plasma Physics of Chinese Academy of Sciences and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; (2)Key Laboratory of Basic Plasma Physics of Chinese Academy of Sciences and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

收稿日期:2011-09-22 修回日期:2011-10-08 出版日期:2012-01-15 发布日期:2012-01-20
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2008CB717800) and the Doctoral Program of Ministry of Education of China (Grant No. 20093402110027).

Anomalous microwave reflection from a metal surface induced by spoof surface plasmon

Wang Liang(王亮)^a)b), Cao Jin-Xiang(曹金祥)^a)†, LŰ You(吕铀)^a), Liu Lei(刘磊)^a), Du Yin-Chang(杜寅昌)^a), and Wang Jian(汪建)^a)

^a Key Laboratory of Basic Plasma Physics of Chinese Academy of Sciences and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; ^b Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Received:2011-09-22 Revised:2011-10-08 Online:2012-01-15 Published:2012-01-20
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2008CB717800) and the Doctoral Program of Ministry of Education of China (Grant No. 20093402110027).

摘要/Abstract

摘要： The reflection of X-band microwaves (8-12 GHz) from a metallic aluminum (Al) surface with groove grating corrugations was investigated experimentally. It was shown that the reflection of p-polarization is much less than the microwave reflected from the corresponding area of an unruled Al surface, with selective wavelength. The experimental results demonstrated that the anomalous microwave reflection is strongly associated with the excitation of spoof surface plasmons at the Al-air interface by the surface grating coupler. This near-total absence of reflected microwaves is similar to the famous Wood's anomaly in the optical regime and is of fundamental importance to the applications of spoof surface plasmons in the microwave regime.

关键词: spoof surface plasmons, anomalous reflection, metal surface

Abstract: The reflection of X-band microwaves (8-12 GHz) from a metallic aluminum (Al) surface with groove grating corrugations was investigated experimentally. It was shown that the reflection of p-polarization is much less than the microwave reflected from the corresponding area of an unruled Al surface, with selective wavelength. The experimental results demonstrated that the anomalous microwave reflection is strongly associated with the excitation of spoof surface plasmons at the Al-air interface by the surface grating coupler. This near-total absence of reflected microwaves is similar to the famous Wood's anomaly in the optical regime and is of fundamental importance to the applications of spoof surface plasmons in the microwave regime.

Key words: spoof surface plasmons, anomalous reflection, metal surface

中图分类号: (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

73.20.Mf

42.25.Gy (Edge and boundary effects; reflection and refraction) 78.66.Bz (Metals and metallic alloys)

王亮, 曹金祥, 吕铀, 刘磊, 杜寅昌, 汪建. Anomalous microwave reflection from a metal surface induced by spoof surface plasmon[J]. 中国物理B, 2012, 21(1): 17301-017301.

Wang Liang(王亮), Cao Jin-Xiang(曹金祥), LŰ You(吕铀), Liu Lei(刘磊), Du Yin-Chang(杜寅昌), and Wang Jian(汪建) . Anomalous microwave reflection from a metal surface induced by spoof surface plasmon[J]. Chin. Phys. B, 2012, 21(1): 17301-017301.

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Anomalous microwave reflection from a metal surface induced by spoof surface plasmon

Anomalous microwave reflection from a metal surface induced by spoof surface plasmon

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