Volume 87, Number 3, August 2009
|Number of page(s)||4|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||28 August 2009|
Wave energy amplification in a metamaterial-based traveling-wave structure
Department of Physics, Lancaster University - Lancaster, LA1 4YB UK, EU
Corresponding author: email@example.com
Accepted: 25 July 2009
We consider the interaction between a particle beam and a propagating electromagnetic wave in the presence of a metamaterial. We show that the introduction of a metamaterial gives rise to a novel dispersion curve which determines a unique wave particle relationship, via the frequency dependence of the metamaterial and the novel ability of metamaterials to exhibit simultaneous negative permittivity and permeability. Using a modified form of Madey's theorem we find that the novel dispersion of the metamaterial leads to an amplification of the EM wave power.
PACS: 41.20.Jb – Electromagnetic wave propagation; radiowave propagation / 07.57.Hm – Infrared, submillimeter wave, microwave, and radiowave sources / 07.57.-c – Infrared, submillimeter wave, microwave and radiowave instruments and equipment
© EPLA, 2009
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