Near field of stacked diffraction gratings



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Torcal Milla, Francisco José and Sánchez Brea, Luis Miguel and Bernabeu Martínez, Eusebio (2013) Near field of stacked diffraction gratings. Optik, 124 (21). pp. 5237-5239. ISSN 0030-4026

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We obtain a general analytical formulation for determining the near field produced by N diffraction gratings disposed in stack using a scalar approximation. Parameters of the gratings such as type-amplitude/phase-, fill factors, periods and relative positions between gratings along the x and y axes are considered. The obtained formulation is useful for analyzing problems which involve several diffraction gratings, such as optical encoders since it is computationally faster than integral formulations. Finally, analytical results are compared with numerical simulations based on the Rayleigh–Sommerfeld equation.

Item Type:Article
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© 2013 Elsevier GmbH.
This work has been partially supported by projects DPI2011-27851 and INNPACTO “FORE”, IPT-020000-2010-9 of the Ministerio de Ciencia e Innovación of Spain.

Uncontrolled Keywords:Diffraction, Diffraction Gratings, Fresnel Approximation
Subjects:Sciences > Physics > Optics
ID Code:26103
Deposited On:16 Jul 2014 11:45
Last Modified:31 Dec 2020 00:03

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