Enhanced transmission by a grating composed of left-handed materials

Prabhakaran Letha Premlal (), Dinesh Chandra Tiwari and Vandana Chaturvedi
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Prabhakaran Letha Premlal: School of Studies in Electronics, Jiwaji University
Dinesh Chandra Tiwari: School of Studies in Electronics, Jiwaji University
Vandana Chaturvedi: Govt. S.L.P College, Morar

The European Physical Journal B: Condensed Matter and Complex Systems, 2018, vol. 91, issue 5, 1-6

Abstract: Abstract We present a detailed theoretical analysis about the influence of surface polaritons on the transmission properties of electromagnetic waves at the periodically corrugated interface between the vacuum and left-handed material by using nonlinear boundary condition approach. The principle behind this approach is to match the wave fields across the grating interface by using a set of linear wave equation with nonlinear boundary conditions. The resonant transmission of the incident electromagnetic radiation in this structure is feasible within a certain frequency band, where there is a range of frequency over which both the electric permittivity and the magnetic permeability are simultaneously negative. The enhanced transmission is attributed to the coupling of the incident electromagnetic wave with the excited surface polaritons on grating interface. Finally, we present the numerical results illustrating the effect of the structural parameters and angle of incidence on the transmission spectra of a TM polarized electromagnetic wave.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1140/epjb/e2018-80571-5

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