Francesco Aieta
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View article: Recent advances in planar optics: from plasmonic to dielectric metasurfaces
Recent advances in planar optics: from plasmonic to dielectric metasurfaces Open
This article reviews recent progress leading to the realization of planar optical components made of a single layer of phase shifting nanostructures. After introducing the principles of planar optics and discussing earlier works on subwave…
View article: High efficiency near diffraction-limited mid-infrared flat lenses based on metasurface reflectarrays
High efficiency near diffraction-limited mid-infrared flat lenses based on metasurface reflectarrays Open
We report the first demonstration of a mid-IR reflection-based flat lens with high efficiency and near diffraction-limited focusing. Focusing efficiency as high as 80%, in good agreement with simulations (83%), has been achieved at 45° inc…
View article: Designing large, high-efficiency, high-numerical-aperture, transmissive meta-lenses for visible light
Designing large, high-efficiency, high-numerical-aperture, transmissive meta-lenses for visible light Open
A metasurface lens (meta-lens) bends light using nanostructures on a flat surface. Macroscopic meta-lenses (mm- to cm-scale diameter) have been quite difficult to simulate and optimize, due to the large area, the lack of periodicity, and t…