Antimatched Electromagnetic Metasurfaces for Broadband Arbitrary Phase Manipulation in Reflection
Abstract
Metasurfaces impart phase discontinuities on impinging electromagnetic waves that are typically limited to 0–2π. Here, we demonstrate that multiresonant metasurfaces can break free from this limitation and supply arbitrarily large, tunable time delays over ultrawide bandwidths. As such, ultrathin metasurfaces can act as the equivalent of thick bulk structures by emulating the multiple geometric resonances of three-dimensional systems that originate from phase accumulation with effective material resonances implemented on the surface itself via suitable subwavelength meta-atoms. We describe a constructive procedure for defining the required sheet admittivities of such metasurfaces. Importantly, the proposed approach provides an exactly linear phase response so that broadband pulses can experience the desired group delay without any distortion of the pulse shape. We focus on operation in reflection by exploiting an antimatching condition, satisfied by interleaved electric and magnetic Lorentzian resonances in the surface admittivities, which completely zeroes out transmission through the metasurface. As a result, the proposed metasurfaces can perfectly reflect a broadband pulse imparting a prescribed group delay. The group delay can be tuned by modifying the implemented resonances, thus opening up diverse possibilities in the temporal applications of metasurfaces.
- Authors:
-
- Institute of Electronic Structure and Laser, FORTH, GR-71110 Heraklion, Crete, Greece
- Ames Laboratory—U.S. DOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
- Institute of Electronic Structure and Laser, FORTH, GR-71110 Heraklion, Crete, Greece, Ames Laboratory—U.S. DOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States); Idryma Technologias kai Ereunas, Athens (Greece)
- Sponsoring Org.:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; European Union (EU)
- OSTI Identifier:
- 1423697
- Alternate Identifier(s):
- OSTI ID: 1433662; OSTI ID: 1508574
- Report Number(s):
- IS-J-9616
Journal ID: ISSN 2330-4022
- Grant/Contract Number:
- AC02-07CH11358; 736876; 320081
- Resource Type:
- Published Article
- Journal Name:
- ACS Photonics
- Additional Journal Information:
- Journal Name: ACS Photonics Journal Volume: 5 Journal Issue: 3; Journal ID: ISSN 2330-4022
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; metasurfaces; metamaterials; multiple resonances; tunable; broadband; reflection; phase delay; group delay
Citation Formats
Tsilipakos, Odysseas, Koschny, Thomas, and Soukoulis, Costas M. Antimatched Electromagnetic Metasurfaces for Broadband Arbitrary Phase Manipulation in Reflection. United States: N. p., 2018.
Web. doi:10.1021/acsphotonics.7b01415.
Tsilipakos, Odysseas, Koschny, Thomas, & Soukoulis, Costas M. Antimatched Electromagnetic Metasurfaces for Broadband Arbitrary Phase Manipulation in Reflection. United States. https://doi.org/10.1021/acsphotonics.7b01415
Tsilipakos, Odysseas, Koschny, Thomas, and Soukoulis, Costas M. Wed .
"Antimatched Electromagnetic Metasurfaces for Broadband Arbitrary Phase Manipulation in Reflection". United States. https://doi.org/10.1021/acsphotonics.7b01415.
@article{osti_1423697,
title = {Antimatched Electromagnetic Metasurfaces for Broadband Arbitrary Phase Manipulation in Reflection},
author = {Tsilipakos, Odysseas and Koschny, Thomas and Soukoulis, Costas M.},
abstractNote = {Metasurfaces impart phase discontinuities on impinging electromagnetic waves that are typically limited to 0–2π. Here, we demonstrate that multiresonant metasurfaces can break free from this limitation and supply arbitrarily large, tunable time delays over ultrawide bandwidths. As such, ultrathin metasurfaces can act as the equivalent of thick bulk structures by emulating the multiple geometric resonances of three-dimensional systems that originate from phase accumulation with effective material resonances implemented on the surface itself via suitable subwavelength meta-atoms. We describe a constructive procedure for defining the required sheet admittivities of such metasurfaces. Importantly, the proposed approach provides an exactly linear phase response so that broadband pulses can experience the desired group delay without any distortion of the pulse shape. We focus on operation in reflection by exploiting an antimatching condition, satisfied by interleaved electric and magnetic Lorentzian resonances in the surface admittivities, which completely zeroes out transmission through the metasurface. As a result, the proposed metasurfaces can perfectly reflect a broadband pulse imparting a prescribed group delay. The group delay can be tuned by modifying the implemented resonances, thus opening up diverse possibilities in the temporal applications of metasurfaces.},
doi = {10.1021/acsphotonics.7b01415},
journal = {ACS Photonics},
number = 3,
volume = 5,
place = {United States},
year = {Wed Jan 03 00:00:00 EST 2018},
month = {Wed Jan 03 00:00:00 EST 2018}
}
https://doi.org/10.1021/acsphotonics.7b01415
Web of Science
Figures / Tables:
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