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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 2 — Jan. 15, 2008
  • pp: 159–161

Study of the numerical artifacts in differential analysis of highly conducting gratings

Amin Khavasi, Khashayar Mehrany, and Amir H. Jazayeri  »View Author Affiliations


Optics Letters, Vol. 33, Issue 2, pp. 159-161 (2008)
http://dx.doi.org/10.1364/OL.33.000159


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Abstract

Li’s Fourier factorization rule [ J. Opt. Soc. Am. A 13, 1870 (1996) ] was recently shown to be problematic to apply to highly conducting metallic gratings. We provide further information about the applicability of different differential methods and are concerned with the relation of observed numerical artifacts, the total number of retained space harmonics, the presence of both positive and negative permittivity inside the groove region, and the validity of Li’s inverse rule. Two different cases corresponding to lossless and low-loss binary metallic gratings are considered, and it is shown that an increase in the number of retained space harmonics can relieve the presence of numerical artifacts.

© 2008 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1960) Diffraction and gratings : Diffraction theory
(050.2770) Diffraction and gratings : Gratings

ToC Category:
Diffraction and Gratings

History
Original Manuscript: October 30, 2007
Manuscript Accepted: November 29, 2007
Published: January 10, 2008

Citation
Amin Khavasi, Khashayar Mehrany, and Amir H. Jazayeri, "Study of the numerical artifacts in differential analysis of highly conducting gratings," Opt. Lett. 33, 159-161 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-2-159


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