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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 9 — Mar. 20, 2006
  • pp: 1943–1950

Finite-difference time-domain analysis of frequency-selective surfaces in the mid-infrared

Neal G. Skinner and Dale M. Byrne  »View Author Affiliations


Applied Optics, Vol. 45, Issue 9, pp. 1943-1950 (2006)
http://dx.doi.org/10.1364/AO.45.001943


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Abstract

We use the finite-difference time-domain (FDTD) method to model the spectral properties of frequency-selective surfaces (FSSs) at normal incidence in the 1 10   μm wavelength. At these wavelengths the usual assumption that the metallic portions of a FSS are infinitesimally thin perfect conductors are no longer valid. We include the effects of dispersive complex conductivity for real metals and dispersive permittivity for dielectric materials by developing a unified approach that is especially suited for use in FDTD simulations. We concentrate on the finite nature of the metallic conductivity and its variation with wavelength in FSS structures. Our simulation results indicate that the resonant spectrum of a FSS in this wavelength range depends not only on the geometry of the structure and the dielectric substrate present, but also critically on the dispersive properties of the metal species used for the conductors.

© 2006 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(160.3900) Materials : Metals
(160.4760) Materials : Optical properties
(260.2030) Physical optics : Dispersion
(260.3910) Physical optics : Metal optics

ToC Category:
Physical Optics

History
Original Manuscript: May 11, 2005
Revised Manuscript: October 18, 2005
Manuscript Accepted: November 2, 2005

Citation
Neal G. Skinner and Dale M. Byrne, "Finite-difference time-domain analysis of frequency-selective surfaces in the mid-infrared," Appl. Opt. 45, 1943-1950 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-9-1943

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