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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 19, Iss. 2 — Feb. 1, 2002
  • pp: 325–334

Differential theory of gratings made of anisotropic materials

Koki Watanabe, Roger Petit, and Michel Nevière  »View Author Affiliations


JOSA A, Vol. 19, Issue 2, pp. 325-334 (2002)
http://dx.doi.org/10.1364/JOSAA.19.000325


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Abstract

Arbitrary profiled gratings made with anisotropic materials are discussed; the anisotropic character concerns electric and/or magnetic properties. Our aim is to avoid the use of the staircase approximation of the profile, whose convergence is questionable. A coupled first-order differential-equation set is derived by taking into account Li’s remarks about Fourier factorization [J. Opt. Soc. Am. A 13, 1870 (1996)], but the present formulation shows that, in return for a convenient form of the differential system, it is possible to use only the intuitive Laurent rule. Our method, when applied to the simpler case of isotropic gratings, is shown to be consistent with that of previous studies. Moreover, from the numerical point of view, the convergence of our formulation for an anisotropic grating is faster than that of the conventional differential method.

© 2002 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
(260.1180) Physical optics : Crystal optics
(260.2110) Physical optics : Electromagnetic optics

Citation
Koki Watanabe, Roger Petit, and Michel Nevière, "Differential theory of gratings made of anisotropic materials," J. Opt. Soc. Am. A 19, 325-334 (2002)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-19-2-325

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