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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 15, Iss. 10 — Oct. 1, 1998
  • pp: 2783–2785

Spectral filtering with finitely conducting inductive grids

Ville Kettunen, Markku Kuittinen, Jari Turunen, and Pasi Vahimaa  »View Author Affiliations

JOSA A, Vol. 15, Issue 10, pp. 2783-2785 (1998)

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Inductive wire grids with square-shaped holes on a thin finitely conducting metal screen are examined by rigorous three-dimensional electromagnetic diffraction theory in the region where the optical wavelength is comparable with the grid period. Spectral transmittance and reflectance curves are computed, considering the selection of the metal, the properties of the grid (metal-layer thicknesses, fill factor, aperture shape), and the angle of incidence. High-performance polarization-independent short-wavelength pass filters are designed for near-infrared and visible light. The importance of finite conductivity is demonstrated, and Al appears to be the best metal in this spectral region.

© 1998 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings

Original Manuscript: March 12, 1998
Revised Manuscript: June 3, 1998
Manuscript Accepted: June 4, 1998
Published: October 1, 1998

Ville Kettunen, Markku Kuittinen, Jari Turunen, and Pasi Vahimaa, "Spectral filtering with finitely conducting inductive grids," J. Opt. Soc. Am. A 15, 2783-2785 (1998)

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