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Angle-Multiplexed Metasurfaces: Encoding Independent Wavefronts in a Single Metasurface under Different Illumination Angles

Kamali, Seyedeh Mahsa and Arbabi, Ehsan and Arbabi, Amir and Horie, Yu and Faraji-Dana, Mohammad Sadegh and Faraon, Andrei (2017) Angle-Multiplexed Metasurfaces: Encoding Independent Wavefronts in a Single Metasurface under Different Illumination Angles. Physical Review X, 7 (4). Art. No. 041056. ISSN 2160-3308.

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The angular response of thin diffractive optical elements is highly correlated. For example, the angles of incidence and diffraction of a grating are locked through the grating momentum determined by the grating period. Other diffractive devices, including conventional metasurfaces, have a similar angular behavior due to the fixed locations of the Fresnel zone boundaries and the weak angular sensitivity of the meta-atoms. To alter this fundamental property, we introduce angle-multiplexed metasurfaces, composed of reflective high-contrast dielectric U-shaped meta-atoms, whose response under illumination from different angles can be controlled independently. This enables flat optical devices that impose different and independent optical transformations when illuminated from different directions, a capability not previously available in diffractive optics.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Kamali, Seyedeh Mahsa0000-0002-6968-811X
Arbabi, Ehsan0000-0002-5328-3863
Arbabi, Amir0000-0001-8831-7552
Horie, Yu0000-0001-7083-1270
Faraon, Andrei0000-0002-8141-391X
Additional Information:© 2017 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 23 June 2017; published 6 December 2017. This work was supported by the DOE “Light-Material Interactions in Energy Conversion” Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Grant No. DE-SC0001293. A. A., E. A., and M. F. were supported by Samsung Electronics. A. A. and Y. H were also supported by DARPA. The device nanofabrication was performed at the Kavli Nanoscience Institute at Caltech.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001293
Samsung ElectronicsUNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Issue or Number:4
Record Number:CaltechAUTHORS:20171130-112153257
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83600
Deposited By: George Porter
Deposited On:06 Dec 2017 17:54
Last Modified:03 Oct 2019 19:08

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