Novel electromagnetic radiation in a semi-infinite space filled with a double-negative metamaterial
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Author(s)
Duan, Zhaoyun
Guo, Chen
Zhou, Jun
Lu, Jucheng
Chen, Min
Date Issued
January 2012
Journal
Physics of Plasmas
Publisher
American Institute of Physics
Citation
Duan, Zhaoyun et al. “Novel Electromagnetic Radiation in a Semi-infinite Space Filled with a Double-negative Metamaterial.” Physics of Plasmas 19.1 (2012): 013112. CrossRef. Web.
Version
Author's final manuscript
Abstract
We have theoretically investigated the electromagnetic radiation excited by a charged particle moving along a semi-infinite space filled with a double-negative metamaterial (DNM). Cherenkov radiation in the double-negative region exhibits reversed or backward radiation behavior. The spectral density of reversed Cherenkov radiation has a continuous distribution over the radiation frequency region. The influence of some important parameters on the Cherenkov radiation energy per unit length has been discussed. The surface wave in the vacuum region presented here also is investigated. We conclude that the amplitude of the surface wave is greatly enhanced over some normal dielectric material cases. The enhanced surface wave may be useful for high frequency and high power vacuum electron devices with the DNM.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution-Noncommercial-Share Alike 3.0
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DOI of Published Version
https://doi.org/10.1063/1.3677888
