Electro-Optically Tunable Multifunctional Metasurfaces
Abstract
Shaping the flow of light at the nanoscale has been a grand challenge for nanophotonics over decades. It is now widely recognized that metasurfaces represent a chip-scale nanophotonics array technology capable of comprehensively controlling the wavefront of light via appropriately configuring subwavelength antenna elements. Here, we demonstrate a reconfigurable metasurface that is multifunctional, i.e., notionally capable of providing diverse optical functions in the telecommunication wavelength regime, using a single compact, lightweight, electronically controlled array with no moving parts. By electro-optical control of the phase of the scattered light from each identical individual metasurface element in an array, we demonstrate a single prototype multifunctional programmable metasurface that is capable of both dynamic beam steering and reconfigurable light focusing. Reconfigurable multifunctional metasurfaces with arrays of tunable optical antennas thus can perform arbitrary optical functions by programmable array-level control of scattered light phase, amplitude, and polarization, similar to dynamic and programmable memories in electronics.
Additional Information
© 2020 American Chemical Society. Received: February 13, 2020; Accepted: April 30, 2020; Published: April 30, 2020. This work was supported by Samsung Electronics and the National Aeronautics and Space Administration. P.C.W. acknowledges the support from Ministry of Science and Technology, Taiwan (Grant Nos. 107-2923-M-006-004-MY3; 108-2112-M-006-021-MY3). P.C.W. also acknowledges the support in part by Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University (NCKU). The authors acknowledge metasurface device fabrication support provided by the Kavli Nanoscience Institute (KNI). Author Contributions: G.K.S., R.S., and H.A.A. conceived the original idea. G.K.S. performed the numerical design, device fabrication, and the optical measurements, analyzed numerical and experimental data, designed and built the PCBs for individual electrical control of metasurface elements, helped with the buildup of the optical setup for measurement, and wrote the manuscript. P.C.W. built the optical setup and performed the numerical simulations for beam steering and focusing. R.S. performed the device physics numerical calculations, helped with data analysis, and wrote the manuscript. H.A.A. organized the project, designed experiments, analyzed the results, and prepared the manuscript. All authors discussed the results and commented on the manuscript. The authors declare no competing financial interest. Preprint version is available at Kafaie Shirmanesh, G.; Sokhoyan, R.; Wu, P. C.; Atwater, H. A. Electro-Optically Tunable Universal Metasurfaces. 2019, 1910.02069. arXiv: physics.optics. http://arxiv.org/abs/1910.02069 (Accessed Oct 4, 2019).Attached Files
Accepted Version - acsnano.0c01269_accepted.pdf
Submitted - 1910.02069.pdf
Supplemental Material - nn0c01269_si_002.pdf
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Additional details
- Alternative title
- Electro-Optically Tunable Universal Metasurfaces
- Eprint ID
- 100333
- DOI
- 10.1021/acsnano.0c01269
- Resolver ID
- CaltechAUTHORS:20191217-113937638
- Samsung Electronics
- NASA
- Ministry of Science and Technology (Taipei)
- 107-2923-M-006-004-MY3
- Ministry of Science and Technology (Taipei)
- 108-2112-M-006-021-MY3
- National Cheng Kung University
- Created
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2019-12-17Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Kavli Nanoscience Institute