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Highly tunable elastic dielectric metasurface lenses

Kamali, Seyedeh Mahsa and Arbabi, Ehsan and Arbabi, Amir and Horie, Yu and Faraon, Andrei (2016) Highly tunable elastic dielectric metasurface lenses. Laser and Photonics Reviews, 10 (6). pp. 1002-1008. ISSN 1863-8880. doi:10.1002/lpor.201600144.

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Dielectric metasurfaces are two-dimensional structures composed of nano-scatterers that manipulate the phase and polarization of optical waves with subwavelength spatial resolution, thus enabling ultra-thin components for free-space optics. While high performance devices with various functionalities, including some that are difficult to achieve using conventional optical setups have been shown, most demonstrated components have fixed parameters. Here, we demonstrate highly tunable dielectric metasurface devices based on subwavelength thick silicon nano-posts encapsulated in a thin transparent elastic polymer. As proof of concept, we demonstrate a metasurface microlens operating at 915 nm, with focal distance tuning from 600 μm to 1400 μm (over 952 diopters change in optical power) through radial strain, while maintaining a diffraction limited focus and a focusing efficiency above 50%. The demonstrated tunable metasurface concept is highly versatile for developing ultra-slim, multi-functional and tunable optical devices with widespread applications ranging from consumer electronics to medical devices and optical communications.

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:© 2016 by Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Issue online: 22 November 2016; Version of record online: 3 November 2016; Manuscript Accepted: 20 October 2016; Manuscript Revised: 14 October 2016; Manuscript Received: 2 June 2016. This work was supported by the DOE “Light-Material Interactions in Energy Conversion” Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Award no. de-sc0001293. E.A., A.A., and Y.H. were supported by Samsung Electronics. The device nanofabrication was performed at the Kavli Nanoscience Institute at Caltech.
Group:Kavli Nanoscience Institute, Institute for Quantum Information and Matter
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001293
Samsung ElectronicsUNSPECIFIED
Subject Keywords:Dielectric metasurfaces; tunable lenses; elastic metasurfaces
Issue or Number:6
Record Number:CaltechAUTHORS:20160430-100552297
Persistent URL:
Official Citation:Kamali, S. M., Arbabi, E., Arbabi, A., Horie, Y. and Faraon, A. (2016), Highly tunable elastic dielectric metasurface lenses. Laser & Photonics Reviews, 10: 1002–1008. doi:10.1002/lpor.201600144
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66564
Deposited By: Joy Painter
Deposited On:01 May 2016 23:38
Last Modified:10 Nov 2021 23:59

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