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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 8 — Apr. 17, 2006
  • pp: 3114–3128

Effective medium approximation of anisotropic lamellar nanogratings based on Fourier factorization

Martin Foldyna, Razvigor Ossikovski, Antonello De Martino, Bernard Drevillon, Kamil Postava, Dalibor Ciprian, Jaromír Pištora, and Koki Watanabe  »View Author Affiliations

Optics Express, Vol. 14, Issue 8, pp. 3114-3128 (2006)

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Anisotropic lamellar sub-wavelength gratings (nanogratings) are described by Effective Medium Approximation (EMA). Analytical formulas for effective medium optical parameters of nanogratings from arbitrary anisotropic materials are derived using approximation of zero-order diffraction mode. The method is based on Rigorous Coupled Wave Analysis (RCWA) combined with proper Fourier factorization method. Good agreement between EMA and the rigorous model is observed, where slight differences are explained by the influence of evanescent higher Fourier harmonics in the nanograting.

© 2006 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.2770) Diffraction and gratings : Gratings
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry
(160.1190) Materials : Anisotropic optical materials
(310.3840) Thin films : Materials and process characterization

ToC Category:
Diffraction and Gratings

Original Manuscript: January 30, 2006
Revised Manuscript: April 2, 2006
Manuscript Accepted: April 11, 2006
Published: April 17, 2006

Martin Foldyna, Razvigor Ossikovski, Antonello De Martino, Bernard Drevillon, Kamil Postava, Dalibor Ciprian, Jaromír Pištora, and Koki Watanabe, "Effective medium approximation of anisotropic lamellar nanogratings based on Fourier factorization," Opt. Express 14, 3114-3128 (2006)

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