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

作　　者：Wang Liang Cao Jin-Xiang LŰYou Liu Lei Du Yin-Chang Wang Jian 王亮;曹金祥;吕铀;刘磊;杜寅昌;汪建(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)

机构地区：[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]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China

出　　处：《Chinese Physics B》2012年第1期438-441,共4页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2008CB717800);the Doctoral Program o fMinistry of Education of China(Grant No.20093402110027)

摘　　要：The reflection of X-band microwaves （8-12 GHz） from a metallic aluminum （A1） 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.The reflection of X-band microwaves （8-12 GHz） from a metallic aluminum （A1） 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 

分 类 号：O53[理学—等离子体物理]