An all-purpose three-dimensional finite element model for crossed-gratings

Guillaume Demésy; Frédéric Zolla; André Nicolet; Mireille Commandré

doi:10.1117/12.820693

12 May 2009 An all-purpose three-dimensional finite element model for crossed-gratings

Guillaume Demésy, Frédéric Zolla, André Nicolet, Mireille Commandré

Proceedings Volume 7353, Metamaterials IV; 73530G (2009) https://doi.org/10.1117/12.820693
Event: SPIE Optics + Optoelectronics, 2009, Prague, Czech Republic

Abstract

We demonstrate the accuracy of the Finite Element Method (FEM) to characterize an arbitrarily shaped crossed-grating in a multilayered stack illuminated by an arbitrarily polarized plane wave under oblique incidence. To our knowledge, this is the first time that 3D diffraction efficiencies are calculated using the FEM. The method has been validated using classical cases found in the literature. Finally, to illustrate the independence of our method towards the shape of the diffractive object, we present the global energy balance resulting of the diffraction of a plane wave by a lossy thin torus crossed-grating.

Citation Download Citation

Guillaume Demésy, Frédéric Zolla, André Nicolet, and Mireille Commandré "An all-purpose three-dimensional finite element model for crossed-gratings", Proc. SPIE 7353, Metamaterials IV, 73530G (12 May 2009); https://doi.org/10.1117/12.820693

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