Explanipedia

Hybrid model to simulate optical systems combining metasurfaces and classical refractive elements Open

Enzo Isnard, Sébastien Héron, Stéphane Lanteri, Mahmoud Elsawy · 2025

This paper presents an accurate and fast numerical method to compute imaging performance of a centimeter-scale optical system comprising at least one metasurface that can be used inside an optimization design loop to allow direct design of…

Constrained optimization of a zoom lens with CMA-ES algorithm Open

Tristan Marty, Sébastien Héron, Yann Semet · 2025

In the present paper we investigate how optimization algorithm can be tailored to improve the lens design process. We replaced gradient-based optimization methods by the Covariance Matrix Adaptation Evolution Strategy (CMA-ES). This stocha…

High Q-factor coupled Fabry-Perot plasmonic nanoresonator Open

Baptiste Fix, Julien Jaeck, Patrick Bouchon, Nathalie Bardou, Sébastien Héron , et al. · 2024

International audience

Modeling of centimeter-scale metasurfaces in imaging systems Open

Enzo Isnard, Sébastien Héron, Mahmoud Elsawy, Stéphane Lanteri · 2024

International audience

Glass optimization for optical design: CMA-ES optimizer with integer handling Open

Tristan Marty, Sébastien Héron, Yann Semet, Anne Auger, Nikolaus Hansen · 2024

International audience

Advancing wavefront shaping with resonant nonlocal metasurfaces: beyond the limitations of lookup tables Open

Enzo Isnard, Sébastien Héron, Stéphane Lanteri, Mahmoud Elsawy · 2024

LB+IC-CMA-ES: Two Simple Modifications of CMA-ES to Handle Mixed-Integer Problems Open

Tristan Marty, Nikolaus Hansen, Anne Auger, Yann Semet, Sébastien Héron · 2024

Advancing Wavefront Shaping with Resonant Nonlocal Metasurfaces: Beyond the Limitations of Lookup Tables Open

Enzo Isnard, Sébastien Héron, Stéphane Lanteri, Mahmoud Elsawy · 2023

Resonant metasurfaces are of paramount importance in addressing the growing demand for reduced thickness and complexity, while ensuring high optical efficiency. This becomes particularly crucial in overcoming fabrication challenges associa…

Benchmarking CMA-ES with Basic Integer Handling on a Mixed-Integer Test Problem Suite Open

Tristan Marty, Yann Semet, Anne Auger, Sébastien Héron, Nikolaus Hansen · 2023

International audience

Advancing wavefront shaping with resonant metasurface Open

Enzo Isnard, Sébastien Héron, Stéphane Lanteri, Mahmoud Elsawy · 2023

International audience

Optimization-Assisted Design of Wide-Band Structured Microwave Absorbers Open

Erika Vandelle, Sébastien Héron, Thi Quynh Van Hoang, Brigitte Loiseaux · 2023

The obtention of highly absorptive surfaces over a wide frequency band and a wide angular range requires the complex manipulation of both electromagnetic properties and geometrical structure of materials. As a matter of fact, a periodic ar…

Visible imaging system optical design by continuous optimization of glasses Open

Sébastien Héron, Yann Semet · 2023

Choice of lenses materials in optical design is crucial to reduce aberrations down to an acceptable level. Commercial glasses do not cover a continuous range of refractive indices and must be selected in a discrete library making them disc…

Towards a metasurface adapted to hyperspectral imaging applications: from subwavelength design to definition of optical properties Open

Jules Billuart, Sébastien Héron, Brigitte Loiseaux, Claude Amra, Michel Lequime · 2021

We numerically demonstrate the capability of a single metasurface to simultaneously separate and focus spectral features in accordance with the specifications of a pushbroom hyperspectral imager. This is achieved through the dispersion eng…

Experimental demonstration of second-harmonic generation in high χ<sup>2</sup> metasurfaces Open

Léna Soun, Baptiste Fix, Hasnaa El Ouazzani, Sébastien Héron, Nathalie Bardou , et al. · 2021

Metasurfaces able to concentrate light at various wavelengths are promising for enhancing nonlinear interactions. In this Letter, we experimentally demonstrate infrared second-harmonic generation (SHG) by a multi-resonant nanostructure. A …

4000-enhancement of difference frequency generation in a mode-matching metamaterial Open

Léna Soun, Sébastien Héron, Hasnaa El Ouazzani, Baptiste Fix, Riad Haïdar , et al. · 2020

In the wake of the control of light at the sub-wavelength scale by nanoresonators, metasurfaces allowing strong field exaltations are an attractive platform to enhance nonlinear processes. Recently, high efficiency second harmonic and diff…

Metasurface orbital angular momentum holography Open

Haoran Ren, Gauthier Brière, Xinyuan Fang, Peinan Ni, Rajath Sawant , et al. · 2019

High-quality-factor double Fabry–Perot plasmonic nanoresonator Open

Baptiste Fix, Julien Jaeck, Patrick Bouchon, Sébastien Héron, Benjamin Vest , et al. · 2017

Fabry-Perot (FP)-like resonances have been widely described in nanoantennas. In the original FP resonator, a third mirror can be added, resulting in a multimirror interferometer. However, in the case of a combination of nanoantennas, it ha…

Nanostructures pour l'exaltation d'effets non linéaires Open

Sébastien Héron · 2016

Infrared sources based on second order effects are interesting tools for atmospheric pollutants spectrometry thanks to their wide tunability. Such effects nevertheless demand strong incident powers or massive non linear crystals to be effi…

Mode matching in second-order-susceptibility metal-dielectric structures Open

Sébastien Héron, Patrick Bouchon, Riad Haïdar · 2016

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Front Matter: Volume 9357 Open

M Ajmalghan, Apostolos Argyris, Leonetta Baldassarre, A. J. Bennett, Paolo Biagioni , et al. · 2015

Modal method for second harmonic generation in nanostructures Open

Sébastien Héron, Fabrice Pardo, Patrick Bouchon, Jean-Luc Pélouard, Riad Haïdar · 2015

A modal method for the study of second harmonic (SH) generation in nanostructures is depicted both for plane waves and focused beam illumination. It is based on the B-spline modal method, and relies on the undepleted pump approximation. Th…

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