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Conditions for Minimizing the Computational Complexity of the RCWA Calculation of the Diffraction Efficiency of Sawtooth Two-Layer Double-Relief Microstructures
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. Photonics2023, 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.
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. Photonics2023, 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:
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