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ZENODO
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ZENODO
Dataset . 2023
License: CC BY
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ZENODO
Dataset . 2023
License: CC BY
Data sources: Datacite
ZENODO
Dataset . 2023
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Source code and simulation results: Poles and zeros of electromagnetic quantities in photonic systems

Authors: Binkowski, Felix; Betz, Fridtjof; Colom, Rémi; Genevet, Patrice; Burger, Sven;

Source code and simulation results: Poles and zeros of electromagnetic quantities in photonic systems

Abstract

Summary This publication supplements the article "Poles and zeros of electromagnetic quantities in photonic systems" with tabulated data and matlab code that allows to reproduce the results. The article elaborates how evaluating resonances based on contour integrals of scalar electromagnetic quantities extends to computing zeros. Furthermore, direct differentiation of underlying scattering problems is used to compute sensitivities with respect to design parameters. Structure The script 'main_text.m' can be used to reproduce the results provided in the paper. In tabulated form the results are contained in the directory tabulated. Furthermore, the script 'supplement.m' can be used to reproduce results presented in the supplement. The directory RPExpand contains the software RPExpand v2, which is available on Zenodo with additional examples. Compute residues The modal expansion of the Fourier transform is based on its residues at the dominant resonances. If the poles are simple, which often is the case, the residues can be obtained directly from the eigenvectors of the generalized eigenvalue problem used to obtain the poles or the zeros. Introducing the Vandermonde matrix \(V = \begin{bmatrix} 1 & \dots & 1 \\ w_1 & \dots & w_M \\ \vdots & & \vdots \\ w_1^{M-1} &\dots & w_M^{M-1} \end{bmatrix}\), the Hankel matrix \(H\) can be written as \(H = V A V^T\) with \(A\) being the diagonal matrix \(\mathrm{diag}(a_1,\dots,a_M)\) containing the residues \(a_m \). This decomposition is a consequence of the Cauchy's reisdue theorem if the poles are simple. Furthermore, we now that \(V^{-T}\) solves the generalized eigenproblem \(H^

We acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy - The Berlin Mathematics Research Center MATH+ (EXC-2046/1, project ID: 390685689), by the German Federal Ministry of Education and Research (BMBF Forschungscampus MODAL, project 05M20ZBM), and by the European Innovation Council (EIC) project TwistedNano (grant agreement number Pathfinder Open 2021-101046424).

Keywords

Zeros, Metasurfaces, Photonics, Resonances, Contour integral methods, Poles

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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