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