Direct and Inverse Problems for Diffractive Structures — Optimization of Binary Gratings

Johannes Elschner (), Rainer Hinder and Günther Schmidt
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Johannes Elschner: Weierstraß-Institut für Angewandte Analysis und Stochastik
Rainer Hinder: Weierstraß-Institut für Angewandte Analysis und Stochastik
Günther Schmidt: Weierstraß-Institut für Angewandte Analysis und Stochastik

A chapter in Mathematics — Key Technology for the Future, 2003, pp 293-304 from Springer

Abstract: Abstract The goal of the project is to provide flexible analytical and numerical tools for the optimal design of binary and multilevel gratings occurring in many applications in micro-optics. The direct modelling of these diffractive elements has to rely on rigorous grating theory, which is based on Maxwell’s equations. We developed efficient and accurate direct solvers using a variational approach together with a generalized finite element method which appears to be well adapted to rather general diffractive structures as well as complex materials. The optimal design problem is solved by minimization algorithms based on gradient descent and the exact calculation of gradients with respect to the geometry parameters of the grating.

Keywords: Helmholtz Equation; Diffraction Efficiency; Optimal Design Problem; Diffraction Problem; Grating Structure (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-55753-8_24

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DOI: 10.1007/978-3-642-55753-8_24

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