Blazed-binary elements with periods much larger than the wavelength

Mane-Si Laure Lee 1 Philippe Lalanne 1 Pierre Chavel 2
1 Laboratoire Charles Fabry de l'Institut d'Optique / Naphel
LCFIO - Laboratoire Charles Fabry de l'Institut d'Optique
2 Laboratoire Charles Fabry de l'Institut d'Optique / Scop
LCFIO - Laboratoire Charles Fabry de l'Institut d'Optique
Abstract : Blazed-binary optical elements with only binary ridges or pillars are diffractive components that mimic standard blazed-echelette diffractive elements. We report on the behavior of one-dimensional blazed-binary optical elements with local periods much larger than the wavelength. For this purpose, an approximate model based on both scalar and electromagnetic theory is proposed. The model is tested against electromagnetic theory computational results obtained for one-dimensional blazed-binary gratings with large periods. An excellent agreement is obtained, showing that the model is able to predict quantitatively the wavelength and the incidence-angle dependences of the diffraction efficiency of blazed-binary structures.
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Mane-Si Laure Lee, Philippe Lalanne, Pierre Chavel. Blazed-binary elements with periods much larger than the wavelength. Journal of the Optical Society of America. A Optics, Image Science, and Vision, Optical Society of America, 2000, 17 (7), pp.1250-1255. ⟨hal-00867889⟩

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