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Resonant transmission of microwaves through a finite length subwavelength metallic slit
Suckling, James R.
Hibbins, Alastair P.
Sambles, J. Roy
Lawrence, Christopher R.
University of Exeter; QinetiQ Ltd, Farnborough
New Journal of Physics
Institute of Physics and Deutsche Physikalische Gesellschaft
The resonant transmission of microwaves polarized perpendicular to a single subwavelength slit of finite length is presented in detail. It is shown that the resonant frequency rises monotonically as slit length is reduced. Increasing confinement of the resonant fields within the slit is shown to cause the frequency rise. Angle dependence of the transmission is also presented. The results show clearly Fabry-Perot-like standing waves in the direction of propagation with waveguide mode behaviour in the orthogonal direction.
Copyright © 2005 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. This is the published version of an article published in New Journal of Physics Vol. 7, article 250. DOI:10.1088/1367-2630/7/1/250
7, article 250