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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Stephen A. Burns
  • Vol. 23, Iss. 2 — Feb. 1, 2006
  • pp: 306–313

Diffraction of electromagnetic waves by periodic arrays of rectangular cylinders

Mohammad R. Zunoubi and Hassan A. Kalhor  »View Author Affiliations

JOSA A, Vol. 23, Issue 2, pp. 306-313 (2006)

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Reflection, transmission, and absorption of electromagnetic waves by periodic arrays of conducting or dielectric rectangular cylinders are studied by a finite-difference time-domain technique. Truncated gratings made of lossless and lossy conducting and dielectric elements are considered. Results for surface current density, transmission, and reflection coefficients are calculated and compared with corresponding results in the literature, which are obtained by approximate or rigorous methods applicable only to idealized infinite models. An excellent agreement is observed in all cases, which demonstrates the accuracy and efficacy of our proposed analysis technique. Additionally, this numerical method easily analyzes practical gratings that contain a finite number of elements made of lossless, lossy, or even inhomogeneous materials. The results rapidly approach those for the idealized infinite arrays as the number of elements is increased. The method can also solve nested gratings, stacked gratings, and holographic gratings with little analytical or computational effort.

© 2006 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1940) Diffraction and gratings : Diffraction
(050.1950) Diffraction and gratings : Diffraction gratings
(050.2770) Diffraction and gratings : Gratings

ToC Category:
Diffraction and Gratings

Original Manuscript: March 29, 2005
Revised Manuscript: May 27, 2005
Manuscript Accepted: June 2, 2005

Mohammad R. Zunoubi and Hassan A. Kalhor, "Diffraction of electromagnetic waves by periodic arrays of rectangular cylinders," J. Opt. Soc. Am. A 23, 306-313 (2006)

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