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Microwave transmission of a compound metal grating
Hibbins, Alastair P.
Hooper, Ian R.
Lockyear, Matthew J.
Sambles, J. Roy
University of Exeter
Physical Review Letters
American Physical Society
An array of subwavelength slits in a metallic substrate supports a series of Fabry-Perot-like resonances, where each harmonic results in a transmission peak. Addition of extra slits per period yields a compound grating with a structure factor associated with the basis. In this study each repeat period is comprised of a central slit flanked by a pair of narrower slits. It supports three resonances for every Fabry-Perot-like solution. New and useful insight into this phenomenon is gained by describing each of the modes in terms of the band structure of diffractively coupled surface waves.
Alastair P. Hibbins, Ian R. Hooper, Matthew J. Lockyear, and J. Roy Sambles, Physical Review Letters, Vol. 96, article 257402 (2006). "Copyright © 2006 by the American Physical Society."
96 (25), article 257402