A review of dielectric optical metasurfaces for wavefront control

During the past few years, metasurfaces have been used to demonstrate optical elements and systems with capabilities that surpass those of conventional diffractive optics. Here, we review some of these recent developments, with a focus on dielectric structures for shaping optical wavefronts. We disc...

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Bibliographic Details
Published in:Nanophotonics (Berlin, Germany) Germany), 2018-06, Vol.7 (6), p.1041-1068
Main Authors: Kamali, Seyedeh Mahsa, Arbabi, Ehsan, Arbabi, Amir, Faraon, Andrei
Format: Article
Language:English
Subjects:
dielectric metasurfaces
Diffractive optics
flat optics
Metasurfaces
nanophotonics
Optical components
Optics
Phase control
Wave fronts
wavefront control
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Summary:During the past few years, metasurfaces have been used to demonstrate optical elements and systems with capabilities that surpass those of conventional diffractive optics. Here, we review some of these recent developments, with a focus on dielectric structures for shaping optical wavefronts. We discuss the mechanisms for achieving steep phase gradients with high efficiency, simultaneous polarization and phase control, controlling the chromatic dispersion, and controlling the angular response. Then, we review applications in imaging, conformal optics, tunable devices, and optical systems. We conclude with an outlook on future potentials and challenges that need to be overcome.
ISSN:2192-8614
2192-8606
2192-8614
DOI:10.1515/nanoph-2017-0129