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Wide-angular-range and high-resolution beam steering by a metasurface-coupled phased array

Xu, Jian and Cua, Michelle and Zhou, Edward Haojiang and Horie, Yu and Faraon, Andrei and Yang, Changhuei (2018) Wide-angular-range and high-resolution beam steering by a metasurface-coupled phased array. Optics Letters, 43 (21). pp. 5255-5258. ISSN 0146-9592. https://resolver.caltech.edu/CaltechAUTHORS:20181114-153202125

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Abstract

Optical beam steering has broad applications in lidar, optical communications, optical interconnects, and spatially resolved optical sensors. For high-speed applications, phased-array-based beam-steering methods are favored over mechanical methods, as they are unconstrained by inertia and can inherently operate at a higher speed. However, phased-array systems exhibit a tradeoff between angular range and beam divergence, making it difficult to achieve both a large steering angle and a narrow beam divergence. Here, we present a beam-steering method based on wavefront shaping through a disorder-engineered metasurface that circumvents this range-resolution tradeoff. We experimentally demonstrate that, through this technique, one can continuously steer an optical beam within a range of 160° (80° from normal incidence) with an angular resolution of about 0.01° at the cost of beam throughput.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1364/ol.43.005255DOIArticle
ORCID:
AuthorORCID
Xu, Jian0000-0002-4743-2471
Zhou, Edward Haojiang0000-0001-7020-9502
Horie, Yu0000-0001-7083-1270
Faraon, Andrei0000-0002-8141-391X
Yang, Changhuei0000-0001-8791-0354
Additional Information:© 2018 Optical Society of America. Received 17 August 2018; accepted 19 September 2018; posted 25 September 2018 (Doc. ID 342620); published 18 October 2018. We thank Dr. Atsushi Shibukawa, Dr. Haowen Ruan, and Dr. Yan Liu for helpful discussions. Funding: National Institutes of Health (NIH) (NIH- R21EY026228A); Natural Sciences and Engineering Research Council of Canada (NSERC) (NSERC PGSD3).
Funders:
Funding AgencyGrant Number
NIHR21EY026228A
Natural Sciences and Engineering Research Council of Canada (NSERC)PGSD3
Issue or Number:21
Record Number:CaltechAUTHORS:20181114-153202125
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181114-153202125
Official Citation:Jian Xu, Michelle Cua, Edward Haojiang Zhou, Yu Horie, Andrei Faraon, and Changhuei Yang, "Wide-angular-range and high-resolution beam steering by a metasurface-coupled phased array," Opt. Lett. 43, 5255-5258 (2018)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90902
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:14 Nov 2018 23:48
Last Modified:03 Oct 2019 20:29

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