Plasmonic Lattice Lenses for Multiwavelength Achromatic Focusing

Citations Over TimeTop 10% of 2016 papers

Abstract

This paper describes an evolutionary approach to design flat multiwavelength achromatic lenses based on subwavelength plasmonic nanoparticles. Our lattice evolution algorithm achieved desired optical responses by tuning the arrangement of the phase units on a discrete square lattice. Lattice lenses consisting of a single type of nanoparticle could operate at any wavelength in the visible to near-infrared regime (540-1000 nm) by tailoring the localized surface plasmon resonance. When the unit cells were expanded to anisotropic particle shapes, the planar optics could selectively focus light depending on the polarization of incident light. Finally, the algorithm realized efficient multiobjective optimization and produced achromatic lattice lenses at up to three wavelengths (λ = 600 nm, λ = 785 nm, and λ = 980 nm) using multiple different nanoparticle shapes.

Related Papers

• → Achromatic and super-achromatic zero-order waveplates(2004)55 cited
• → <title>Achromatic hybrid diffractive-refractive lens</title>(2001)1 cited
• → The Initial Approximations for Achromatic Doublets of the XVIII Century(2018)
• → Achromatic diffractive lens limits(2020)
• → Achromatic diffractive lens limits(2020)