2016/09/27 by Ori Avayu, Euclides Almeida, Yehiam Prior +1 · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Achromatic lens #Artificial intelligence #Biophotonics #Broadband #Chromatic aberration #Chromatic scale #Computer science #Lens (geology) #Materials science #Metamaterial #Metamaterials and Metasurfaces Applications #Multispectral image #Optics #Optoelectronics #Orbital Angular Momentum in Optics #Photonic crystal #Photonics #Physics #Plasmonic and Surface Plasmon Research #RGB color model #Structural coloration #physics.optics
paper · pdf · doi:10.1038/ncomms14992
arxiv created 2016/09/27 · openalex publication_date 2017/04/05 · arxiv updated 2017/04/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Nanostructured metasurfaces offer unique capabilities for subwavelength control of optical waves. Based on this potential, a large number of metasurfaces have been proposed recently as alternatives to standard optical elements. In most cases, however, these elements suffer from large chromatic aberrations, thus limiting their usefulness for multiwavelength or broadband applications. Here, in order to alleviate the chromatic aberrations of individual diffractive elements, we introduce dense vertical stacking of independent metasurfaces, where each layer is made from a different material, and is optimally designed for a different spectral band. Using this approach, we demonstrate a triply red, green and blue achromatic metalens in the visible range. We further demonstrate functional beam shaping by a self-aligned integrated element for stimulated emission depletion microscopy and a lens that provides anomalous dispersive focusing. These demonstrations lead the way to the realization of ultra-thin superachromatic optical elements showing multiple functionalities-all in a single nanostructured ultra-thin element.