Cerenkov radiation in metallic metamaterials

被引：48

作者：

So, Jin-Kyu ^{[1
]}

Won, Jong-Hyo ^{[1
]}

Sattorov, M. A. ^{[1
]}

Bak, Seung-Ho ^{[1
]}

Jang, Kyu-Ha ^{[1
]}

Park, Gun-Sik ^{[1
]}

Kim, D. S. ^{[2
]}

Garcia-Vidal, F. J. ^{[3
]}

机构：

[1] Seoul Natl Univ, Dept Phys & Astron, Ctr THz Bio Applicat Syst, Seoul 151747, South Korea

[2] Seoul Natl Univ, Dept Phys & Astron, Ctr Subwavelength Opt, Seoul 151747, South Korea

[3] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 15期

基金：

新加坡国家研究基金会;

关键词：

EXPERIMENTAL-VERIFICATION; SURFACE-PLASMONS; NEGATIVE-INDEX;

D O I：

10.1063/1.3492846

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electromagnetic response of a metallic metamaterial to fast-moving electrons is studied by numerical simulations. The considered metamaterial is a one-dimensional array of slits perforated on a metallic film and is found to generate Cerenkov wakes when the electron beam travels near its surface. There is no energy threshold for the generation of such wakes, which would be promising to lower the operation energy of the electron beam in compact Cerenkov free-electron-lasers. Moreover, by analyzing the spectral dependence of the Cerenkov light, it is possible to map the dispersion relation of the guided modes supported by the metamaterial. (C) 2010 American Institute of Physics. [doi:10.1063/1.3492846]

引用

页数：3

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