Journal
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
Volume 2, Issue 1, Pages 48-51Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/2/1/309
Keywords
grating theory; metallic gratings
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We present a semi-analytical model that quantitatively predicts the transmission, the absorption and the resonance locations of one-dimensional lamellar metallic gratings with subwavelength slit apertures. The model relies on the fact that subwavelength apertures perforated in metallic films behave like monomode waveguides and provide Airy-like formulae for the transmission and reflection coefficients. Limitations are outlined for too shallow grating depths.
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