Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Conditions for Minimizing the Computational Complexity of the RCWA Calculation of the Diffraction Efficiency of Sawtooth Two-Layer Double-Relief Microstructures

Grigoriy Isaevich Greisukh
* ORCID logo ,
Artem Ivanovich Antonov
,
Evgeniy Grigorievich Ezhov
,
Victor Anatolyevich Danilov
,
Boris Alexandrovich Usievich
ORCID logo
Version 1 : Received: 14 May 2023 / Approved: 15 May 2023 / Online: 15 May 2023 (09:52:53 CEST)

A peer-reviewed article of this Preprint also exists.

Greisukh, G.I.; Antonov, A.I.; Ezhov, E.G.; Danilov, V.A.; Usievich, B.A. Conditions for Minimizing the Computational Complexity of the RCWA Calculation of the Diffraction Efficiency of Sawtooth Two-Layer Double-Relief Microstructures. Photonics 2023, 10, 794. Greisukh, G.I.; Antonov, A.I.; Ezhov, E.G.; Danilov, V.A.; Usievich, B.A. Conditions for Minimizing the Computational Complexity of the RCWA Calculation of the Diffraction Efficiency of Sawtooth Two-Layer Double-Relief Microstructures. Photonics 2023, 10, 794.

Abstract

In this study novel recommendations are presented and substantiated for selecting the number of modes and optical thicknesses of flat lattice slabs that make up the microreliefs, which minimize the computational complexity of the rigorous coupled-wave analysis calculation of the diffraction efficiency (DE) of a sawtooth two-layer two-relief microstructure, while maintaining the specified reliability of the calculation results. The computational complexity can be controlled by allowing one or another level of oscillation of the DE curves depend on the angle of incidence of the radiation incident on the microstructure. In particular, the complexity of the multi-thousand DE calculations in the optimization process can be reduced by using the proposed methodology as well as increased computational complexity to certify the accuracy of the solution obtained as a result of implemented optimization.

Keywords

two-layer two-relief diffractive microstructure; diffraction efficiency; scalar and rigorous theories of diffraction; rigorous coupled-wave analysis

Subject

Physical Sciences, Optics and Photonics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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