Flat optics for future daily life applications – Mahmoud Elsawy
Channel: Damien Saucez
Date: 2022-06-13

Modern real-life technology demands miniaturization and boosting the performance of conventional optical components. Recently, the field of flat optics “Metasurfaces” has received remarkable attention owing to its capability of controlling all the light properties in a short propagation distance with high resolution. Metasurfaces are optical components consisting of sub-wavelength spaced nanostructures which introduce highly resolved phase, amplitude, and polarization changes on the incoming wavefront. Owing to the versatility and the capabilities of metasurfaces, many exotic and peculiar applications ranging from subwavelength optical microscopy to augmented reality have been demonstrated. Yet, the strong light-matter interactions at the nanoscale require advanced modelling techniques to boost the performance towards the industrial level.
In this talk, I will present our recent activities in the field of metasurfaces. The underlying physical mechanism will be introduced associated with the modelling challenges. Besides, the optimized devices ranging from passive beam deflectors to broadband metalenses together with the perspective trends and opportunities as dynamical control and light-emitting metasurfaces will be highlighted.

Bio
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Mahmoud Elsawy is permanent researcher (ISFP) at Atlantis project-team, Inria, Sophia Antipolis. His research focuses on numerical modelling and optimization of metasurfaces and complex nanophotonic devices. He received his PhD degree at the University of Aix-Marseille, France in 2017 with a specialization in Optics, Photonics, and image processing. The topic of the PhD was related to modelling and improvements of complex nonlinear plasmonic waveguides that can be fabricated and characterized experimentally.