Postdoc :Theory and Design of Active Metasurfaces

Context : 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.

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.

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.

Interested candidates should send their detailed CV and motivations to Directeur de recherche : Nicolas BONOD – nicolas.bonod@fresnel.fr