Asymptotic methods for solving problems of diffraction by non-periodic structures
S. I. Kharitonovab, L. L. Doskolovichba, N. L. Kazanskiiba
a Image Processing Systems Institute of the RAS - Branch of the FSRC "Crystallography and Photonics" RAS, Samara, Russia
b Samara National Research University, Samara, Russia
An asymptotic method for calculating the complex amplitude of a light field in the case of diffraction by non-periodic band gap structures. The novelty of the approach consists in the expansion of the solution of the integral equation into a basis that describes the propagation of light
through a DOE within the geometrical optics approximation and changes into a basis of plane waves used in the calculation of diffraction gratings. We present the results of focusing into a point by a gradient-index diffractive optical element with a band-gap structure. Simulation results
confirm the efficiency of the proposed method.
diffractive optical element (DOE), asymptotic method, coupled-wave analysis, aperiodic structure, quasi-periodic structure, microrelief.
|Russian Science Foundation
|Work performed by a grant from the Russian Science Foundation (Project ¹ 14-31-00014).
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S. I. Kharitonov, L. L. Doskolovich, N. L. Kazanskii, “Asymptotic methods for solving problems of diffraction by non-periodic structures”, Computer Optics, 41:2 (2017), 160–168
Citation in format AMSBIB
\by S.~I.~Kharitonov, L.~L.~Doskolovich, N.~L.~Kazanskii
\paper Asymptotic methods for solving problems of diffraction by non-periodic structures
\jour Computer Optics
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