48 citations · 146 across the 10 of their papers we have counts for
10 papers
Dispersive Perfectly Matched Layer and high order Absorbing Boundary Conditions for the computation of Quasinormal modes of open electromagnetic structures
Guillaume Demésy, Tong Wu, Yoann Brûlé +4
Resonances, also known as quasinormal modes (QNM) in the non-Hermitian case, play a ubiquitous role in all domains of physics ruled by wave phenomena, notably in continuum mechanic…
Electrodynamics of an oscillating particle without cheating PART I : In vacuo. PART II : Near a dispersive bulk
Mauricio Garcia-Vergara, Guillaume Demésy, André Nicolet +1
In this paper, the electromagnetic radiation from an oscillating particle placed in the vicinity of an object of size comparable to the wavelength is studied. Although this problem…
Discontinuities in open photonic waveguides: Rigorous 3D modeling with the finite element method
Guillaume Demésy, Gilles Renversez
In this paper, a general methodology to study rigorously discontinuities in open waveguides is presented. It relies on a full vector description given by Maxwell's equations in the…
Electromagnetic waves in photonic crystals: laws of dispersion, causality and analytical properties
Boris Gralak, Maxence Cassier, Guillaume Demésy +1
Photonic crystals are periodic structures which prevent light propagation along one or more directions in certain frequency intervals. Their band spectrum is usually analyzed using…
Non-linear eigenvalue problems with GetDP and SLEPc: Eigenmode computations of frequency-dispersive photonic open structures
Guillaume Demésy, André Nicolet, Boris Gralak +3
We present a framework to solve non-linear eigenvalue problems suitable for a Finite Element discretization. The implementation is based on the open-source finite element software…
Open source models for the parametric study of diffraction gratings in 2D/2.5D/3D with ONELAB/Gmsh/GetDP
Guillaume Demésy, André Nicolet, Frédéric Zolla
This document aims at presenting both theoretical and practical aspects of the grating2D.pro and grating3D.pro [1] ONELAB [2] models. The 2D model grating2D.pro applies to so-calle…
Extracting an accurate model for permittivity from experimental data : Hunting complex poles from the real line
Mauricio Garcia-Vergara, Guillaume Demésy, Frédéric Zolla
In this letter, we describe a very general procedure to obtain a causal fit of the permittivity of materials from experimental data with very few parameters. Unlike other closed fo…
Calculation and analysis of complex band structure in dispersive and dissipative two-dimensional photonic crystals
Yoann Brûlé, Guillaume Demésy, Boris Gralak
Numerical calculation of modes in dispersive and absorptive systems is performed using the finite element method. The dispersion is tackled in the frame of an extension of Maxwell'…
Resonant metamaterial absorbers for infrared spectral filtering: quasimodal analysis, design, fabrication and characterization
Benjamin Vial, Guillaume Demésy, Frédéric Zolla +7
We present a modal analysis of metal-insulator-metal (MIM) based metamaterials in the far infrared region. These structures can be used as resonant reflection bandcut spectral filt…
Absorption in quantum electrodynamics cavities in terms of a quantum jump operator
V. Debierre, G. Demésy, T. Durt +3
We describe the absorption by the walls of a quantum electrodynamics cavity as a process during which the elementary excitations (photons) of an internal mode of the cavity exit by…