Ontology highlight
ABSTRACT:
SUBMITTER: Liang Y
PROVIDER: S-EPMC6165503 | biostudies-literature | 2018 Sep
REPOSITORIES: biostudies-literature
Nanomaterials (Basel, Switzerland) 20180907 9
A key goal of metalens research is to achieve wavefront shaping of light using optical elements with thicknesses on the order of the wavelength. Here we demonstrate ultrathin highly efficient crystalline titanium dioxide metalenses at blue, green, and red wavelengths (<i>λ</i>₀ = 453 nm, 532 nm, and 633 nm, respectively) based on symmetric slab waveguide theory. These metalenses are less than 488 nm-thick and capable of focusing incident light into very symmetric diffraction-limited spots with s ...[more]