Title: Multilayer Noninteracting Dielectric Metasurfaces for Multiwavelength Metaoptics

Journal Article · · Nano Letters
 [1];  [2];  [3];  [1]; ORCiD logo [3]; ORCiD logo [4]
  1. Vanderbilt Univ., Nashville, TN (United States). Interdisciplinary Materials Science Program
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
  3. Univ. of Tennessee, Knoxville, TN (United States). Min H. Kao Dept. of Electrical Engineering and Computer Science
  4. Vanderbilt Univ., Nashville, TN (United States). Dept. of Mechanical Engineering

Metasurfaces provide a versatile platform for manipulating the wavefront of light using planar nanostructured surfaces. Transmissive metasurfaces, with full 2π phase control, are a particularly attractive platform for replacing conventional optical elements due to their small footprint and broad functionality. However, the operational bandwidth of metasurfaces has been a critical limitation and is directly connected to either their resonant response or the diffractive dispersion of their lattice. While multiwavelength and continuous band operation have been demonstrated, the elements suffer from either low efficiency, reduced imaging quality, or limited element size. We propose a platform that provides for multiwavelength operation by employing tightly spaced multilayer dielectric metasurfaces. As a proof of concept, we demonstrate a multiwavelength metalens doublet (NA = 0.42) with focusing efficiencies of 38% and 52% at wavelengths of 1180 and 1680 nm, respectively. We further show how this approach can be extended to three-wavelength metalenses as well as a spectral splitter. This approach could find applications in fluorescent microscopy, digital imaging, and color routing.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States); Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Organization:
National Science Foundation (NSF) (United States); USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1491299
Journal Information:
Nano Letters, Journal Name: Nano Letters Journal Issue: 12 Vol. 18; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Multifunctional metaoptics based on bilayer metasurfaces journal September 2019
Fano‐Enhanced Circular Dichroism in Deformable Stereo Metasurfaces journal January 2020
Wavevector and Frequency Multiplexing Performed by a Spin‐Decoupled Multichannel Metasurface journal December 2019
Empowered Layer Effects and Prominent Properties in Few‐Layer Metasurfaces journal March 2019
High‐Efficiency Ultrathin Dual‐Wavelength Pancharatnam–Berry Metasurfaces with Complete Independent Phase Control journal July 2019
A Dynamically Modulated All‐Dielectric Metasurface Doublet for Directional Harmonic Generation and Manipulation in Transmission journal September 2019
Multifunctional metaoptics based on bilayer metasurfaces journal September 2019
3D-Integrated metasurfaces for full-colour holography journal September 2019
Single-shot quantitative phase gradient microscopy using a system of multifunctional metasurfaces journal October 2019
High-Efficiency Visible Light Manipulation Using Dielectric Metasurfaces journal April 2019
Anisotropic metasurfaces for efficient polarization independent wavefront steering journal November 2019
Weak superradiance in arrays of plasmonic nanoantennas journal October 2019
Reconfigurable step-zoom metalens without optical and mechanical compensations journal January 2019
Multi-wavelength voltage-coded metasurface based on indium tin oxide: independently and dynamically controllable near-infrared multi-channels journal January 2020
Multifocal metalens based on multilayer Pancharatnam–Berry phase elements architecture journal January 2019
High performance metalenses: numerical aperture, aberrations, chromaticity, and trade-offs journal January 2019