Wave energy amplification in a metamaterial-based traveling-wave structureY. S. Tan and R. Seviour
Department of Physics, Lancaster University - Lancaster, LA1 4YB UK, EU
received 26 May 2009; accepted in final form 25 July 2009; published August 2009
published online 28 August 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.
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