[Th-P] Nanophotonics

[Th-P-77] Metasurface-based Wide Band High Efficiency Blazed Grating

〇Frederic Zamkotsian¹, Simon Ans^1,2, Guillaume Demesy², Quentin Tanguy³, Andrei Mursa³, Roland Salut³, Nicolas Passilly³ (1. Lab. Astro. Marseille (LAM) (France), 2. Institut Fresnel (France), 3. FEMTO-ST (France))

A topology optimized metasurface grating is presented, designed using a 3D, in-house developed Finite Element model. It is manufacturable and exhibits nearly 60% of average diffraction efficiency on the −1st order between 400 and 1500 nm.