title: Highly efficient and broadband wide-angle holography using patch-dipole nanoantenna reflectarrays.
abstract: We demonstrate wide-angle, broadband, and efficient reflection holography by utilizing coupled dipole-patch nanoantenna cells to impose an arbitrary phase profile on the reflected light. High-fidelity images were projected at angles of 45 and 20° with respect to the impinging light with efficiencies ranging between 40-50% over an optical bandwidth exceeding 180 nm. Excellent agreement with the theoretical predictions was found at a wide spectral range. The demonstration of such reflectarrays opens new avenues toward expanding the limits of large-angle holography.
authors.affiliation: School of Electrical Engineering and Tel-Aviv University Center for Nanoscience and Nanotechnology, Tel Aviv University , Tel Aviv 69978, Israel.
authors.forename: Yuval
authors.initials: Y
authors.lastname: Yifat
authors.forename: Michal
authors.initials: M
authors.lastname: Eitan
authors.forename: Zeev
authors.initials: Z
authors.lastname: Iluz
authors.forename: Yael
authors.initials: Y
authors.lastname: Hanein
authors.forename: Amir
authors.initials: A
authors.lastname: Boag
authors.forename: Jacob
authors.initials: J
authors.lastname: Scheuer
mesh_terms: D006696:Holography; D008027:Light; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology