---
res:
  bibo_abstract:
  - We present recent advances in metasurface-based photonics, which enables the realization
    of high performance planar lenses (metalenses) in the visible spectrum. They are
    enabled by a technique based on atomic layer deposition of titanium dioxide allowing
    for the fabrication of nanostructures with high fidelity. First, we demonstrate
    highly efficient metalenses with numerical aperture NA = 0.8 using the Pancharatnam-Berry
    phase approach. These metalenses can focus light into a diffraction-limited spot.
    They have efficiencies as high as 86% and provide high imaging resolution. Furthermore,
    by judicious design of the phase-shifting elements, we achieve a multispectral
    chiral metalens realized with a single metasurface layer. This chiral metalens
    can resolve both the chiral and spectral information of an object without the
    requirement of any additional optical components. Finally, we discuss the experimental
    realization of polarization-insensitive metalenses with NAs as high as 0.85. They
    are able to focus incident light to a spot as small as ~0.64λ with efficiencies
    up to 60%. Due to its straightforward and CMOS-compatible fabrication, this platform
    is promising for a wide range of applications ranging from camera modules, displays,
    laser-based imaging, microscopy, and spectroscopy to laser fabrication and lithography.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Mohammadreza
      foaf_name: Khorasaninejad, Mohammadreza
      foaf_surname: Khorasaninejad
  - foaf_Person:
      foaf_givenName: Wei Ting
      foaf_name: Chen, Wei Ting
      foaf_surname: Chen
  - foaf_Person:
      foaf_givenName: Alexander Y.
      foaf_name: Zhu, Alexander Y.
      foaf_surname: Zhu
  - foaf_Person:
      foaf_givenName: Jaewon
      foaf_name: Oh, Jaewon
      foaf_surname: Oh
  - foaf_Person:
      foaf_givenName: Robert C.
      foaf_name: Devlin, Robert C.
      foaf_surname: Devlin
  - foaf_Person:
      foaf_givenName: Charles
      foaf_name: Roques-Carmes, Charles
      foaf_surname: Roques-Carmes
      foaf_workInfoHomepage: http://www.librecat.org/personId=e2e68fc9-6505-11ef-a541-eb4e72cc3e82
  - foaf_Person:
      foaf_givenName: Ishan
      foaf_name: Mishra, Ishan
      foaf_surname: Mishra
  - foaf_Person:
      foaf_givenName: Federico
      foaf_name: Capasso, Federico
      foaf_surname: Capasso
  bibo_doi: 10.1109/jstqe.2016.2616447
  bibo_issue: '3'
  bibo_volume: 23
  dct_date: 2017^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/1077-260X
  - http://id.crossref.org/issn/1558-4542
  dct_language: eng
  dct_publisher: Institute of Electrical and Electronics Engineers@
  dct_title: Visible wavelength planar metalenses based on titanium dioxide@
...