Offer DescriptionContext : All-dielectric optical nanostructures and metasurfaces are efficient tools for tailoring light properties since they exhibit weak optical losses and can host optical resonances. Their numerical design and optimization turns out to be of the uppest importance for achieving the targeted optical performances.Research project : The main objective of this work is to design all-dielectric active metasurfaces. The group has developed several numerical codes based on FMM, RCWA and FEM. A particular attention will be brought on the singularities of the scattering matrix elements of the metasurface. The spectral response of the metasurface will be optimized and analyzed in the framework of the singularity expansion method. A major objective of this work will be to develop an inverse design method on the basis of the singularities of the scattering elements in the complex frequency plane.Keywords: Computational photonics; Singularities; Poles and Zeros; Resonant Light Scattering; Metasurfaces; Inverse Design.References :I. Ben Soltane, R. Colom, B. Stout, N. Bonod, “Derivation of the Transient and Steady Optical States from the Poles of the S-Matrix,” Laser Photonics Rev. 13, 2200141 (2023) N. Bonod, P. Brianceau, J. Daurios, S. Grosjean, N. Roquin, J.-F. Gleyze, L. Lamaignère, J. Néauport, “Linear-to-Circular Polarization Conversion with Full-Silica Meta-Optics to Reduce Nonlinear Effects in High-Energy Lasers,” Nature Commun. 14, 5383 (2023)I. Ben Soltane, R. Colom, F. Dierrick, B. Stout, N. Bonod, “Multiple-Order Singularity Expansion Method,” New J. Phys. 25, 103022 (2023)I. Ben Soltane, F. Dierick, B. Stout, N. Bonod, “Generalized Drude-Lorentz Model Complying with the Singularity Expansion Method,” Adv. Opt. Mat.xx, 2400093 (2024)Location: The project will be carried out at the Institut Fresnel, Marseille, France, within the Clarte team. The Clarte group of the Fresnel Institut has a strong expertise in the development of electromagnetic numerical methods and in the design and analysis of optical components and nanostructures. In this project, one aims at modeling, designing and analyzing optical cavities with very particular spectral features and optical metasurfaces. Institut Fresnel (about 200 persons in total) is a research laboratory associated to Aix-Marseille Université, CNRS and Centrale Méditerranée, located on the Campus Saint-Jérôme in Marseille.Background: The candidate should have a solid background and expertise in computational photonics, numerical modelling and theoretical photonics. Experience in Matlab, Python, FORTRAN, LateX and other softwares will be appreciated.Start date: before 01/09/2024Duration: 18 monthInterested candidates should send their detailed CV and motivations to Nicolas Bonod.Nicolas Bonod :RequirementsResearch Field Physics » Optics Education Level PhD or equivalentSkills/QualificationsThe candidate should have a solid background and expertise in computational photonics, numerical modelling and theoretical photonics. Experience in Matlab, Python, FORTRAN, LateX and other softwares will be appreciated.Languages ENGLISH Level ExcellentResearch Field Physics » Optics Years of Research Experience 1 - 4Additional InformationWebsite for additional job detailsWork Location(s)Number of offers available 1 Company/Institute CNRS INSTITUT FRESNEL Country France City MARSEILLE Postal Code 13013 GeofieldWhere to apply E-mailnicolas.bonod@fresnel.frContact CityMarseille WebsiteStreetFac des sciences de st JeromeSTATUS: EXPIRED