Surface-plasmon-polariton waves guided by the uniformly moving planar interface of a metal film and dielectric slab - Physics > OpticsReportar como inadecuado




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Abstract: We explored the effects of relative motion on the excitation ofsurface-plasmon-polariton SPP waves guided by the planar interface of a metalfilm and a dielectric slab, both materials being isotropic and homogeneous.Electromagnetic phasors in moving and non-moving reference frames were relateddirectly using the corresponding Lorentz transformations. Our numerical studiesrevealed that, in the case of a uniformly moving dielectric slab, the angle ofincidence for SPP-wave excitation is highly sensitive to i the ratio $\beta$of the speed of motion to speed of light in free space and ii the directionof motion. When the direction of motion is parallel to the plane of incidence,the SPP wave is excited by $p$-polarized but not $s$-polarized incident planewaves for low and moderate values of $\beta$, while at higher values of $\beta$the total reflection regime breaks down. When the direction of motion isperpendicular to the plane of incidence, the SPP wave is excited by$p$-polarized incident plane waves for low values of $\beta$, but $s$-polarizedincident plane waves at moderate values of $\beta$, while at higher values of$\beta$ the SPP wave is not excited. In the case of a uniformly moving metalfilm, the sensitivity to $\beta$ and the direction of motion is less obvious.



Autor: Tom G. Mackay University of Edinburgh, Akhlesh Lakhtakia Pennsylvania State University

Fuente: https://arxiv.org/







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