Nonlocal metasurfaces for spectrally decoupled wavefront manipulation
and eye tracking
- URL: http://arxiv.org/abs/2102.05790v1
- Date: Thu, 11 Feb 2021 01:00:39 GMT
- Title: Nonlocal metasurfaces for spectrally decoupled wavefront manipulation
and eye tracking
- Authors: Jung-Hwan Song, Jorik van de Groep, Soo Jin Kim, and Mark L.
Brongersma
- Abstract summary: We show high-Q, nonlocal metasurfaces with atomically-thin metasurface elements that offer enhanced light-matter interaction and fully-decoupled optical functions at different wavelengths.
A metasurface patterned on a regular pair of eye-glasses provides an unperturbed view of the world across the visible spectrum and redirects near-infrared light to a camera to allow imaging of the eye.
- Score: 0.4374837991804085
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Metasurface-based optical elements typically manipulate light waves by
imparting space-variant changes in the amplitude and phase with a dense array
of scattering nanostructures. The highly-localized and low
optical-quality-factor (Q) modes of nanostructures are beneficial for
wavefront-shaping as they afford quasi-local control over the electromagnetic
fields. However, many emerging imaging, sensing, communication, display, and
non-linear optics applications instead require flat, high-Q optical elements
that provide notable energy storage and a much higher degree of spectral
control over the wavefront. Here, we demonstrate high-Q, nonlocal metasurfaces
with atomically-thin metasurface elements that offer notably enhanced
light-matter interaction and fully-decoupled optical functions at different
wavelengths. We illustrate a possible use of such a flat optic in eye tracking
for eye-wear. Here, a metasurface patterned on a regular pair of eye-glasses
provides an unperturbed view of the world across the visible spectrum and
redirects near-infrared light to a camera to allow imaging of the eye.
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