Details
| Original language | English |
|---|---|
| Article number | 4700116 |
| Journal | IEEE Journal of Selected Topics in Quantum Electronics |
| Volume | 27 |
| Issue number | 1 |
| Publication status | Published - 29 Apr 2020 |
| Externally published | Yes |
Abstract
Controlling the phase and amplitude of light emitted by the elements (i.e., pixels) of an optical phased array is of paramount importance to realizing dynamic beam steering for LIDAR applications. In this paper, we propose a plasmonic pixel composed of a metallic nanoantenna covered by a thin oxide layer, and a conductive oxide, e.g., ITO, for use in a reflectarray metasurface. By considering voltage biasing of the nanoantenna via metallic connectors, and exploiting the carrier refraction effect in the metal-oxide-semiconductor capacitor in the accumulation and depletion regions, our simulations predict control of the reflection coefficient phase over a range >330^{\circ } with a nearly constant magnitude. We discuss the physical mechanism underlying the optical response, the effect of the connectors, and propose strategies to maximize the magnitude of the reflection coefficient and to achieve dual-band operation. The suitability of our plasmonic pixel design for beam steering in LIDAR is demonstrated via 3D-FDTD simulations.
Keywords
- Antenna arrays, antenna radiation patterns, beam steering, dipole antennas, metal-insulator structures, MOS capacitors, optical phase shifters, phased arrays, plasmons, reflectarrays
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Journal of Selected Topics in Quantum Electronics, Vol. 27, No. 1, 4700116 , 29.04.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tunable plasmonic metasurfaces for optical phased arrays
AU - Cala Lesina, Antonino
AU - Goodwill, Dominic
AU - Bernier, Eric
AU - Ramunno, Lora
AU - Berini, Pierre
N1 - Funding information: We acknowledge computational support from SciNet and Compute Canada, and financial support from NSERC and Huawei Technologies Canada.
PY - 2020/4/29
Y1 - 2020/4/29
N2 - Controlling the phase and amplitude of light emitted by the elements (i.e., pixels) of an optical phased array is of paramount importance to realizing dynamic beam steering for LIDAR applications. In this paper, we propose a plasmonic pixel composed of a metallic nanoantenna covered by a thin oxide layer, and a conductive oxide, e.g., ITO, for use in a reflectarray metasurface. By considering voltage biasing of the nanoantenna via metallic connectors, and exploiting the carrier refraction effect in the metal-oxide-semiconductor capacitor in the accumulation and depletion regions, our simulations predict control of the reflection coefficient phase over a range >330^{\circ } with a nearly constant magnitude. We discuss the physical mechanism underlying the optical response, the effect of the connectors, and propose strategies to maximize the magnitude of the reflection coefficient and to achieve dual-band operation. The suitability of our plasmonic pixel design for beam steering in LIDAR is demonstrated via 3D-FDTD simulations.
AB - Controlling the phase and amplitude of light emitted by the elements (i.e., pixels) of an optical phased array is of paramount importance to realizing dynamic beam steering for LIDAR applications. In this paper, we propose a plasmonic pixel composed of a metallic nanoantenna covered by a thin oxide layer, and a conductive oxide, e.g., ITO, for use in a reflectarray metasurface. By considering voltage biasing of the nanoantenna via metallic connectors, and exploiting the carrier refraction effect in the metal-oxide-semiconductor capacitor in the accumulation and depletion regions, our simulations predict control of the reflection coefficient phase over a range >330^{\circ } with a nearly constant magnitude. We discuss the physical mechanism underlying the optical response, the effect of the connectors, and propose strategies to maximize the magnitude of the reflection coefficient and to achieve dual-band operation. The suitability of our plasmonic pixel design for beam steering in LIDAR is demonstrated via 3D-FDTD simulations.
KW - Antenna arrays
KW - antenna radiation patterns
KW - beam steering
KW - dipole antennas
KW - metal-insulator structures
KW - MOS capacitors
KW - optical phase shifters
KW - phased arrays
KW - plasmons
KW - reflectarrays
UR - http://www.scopus.com/inward/record.url?scp=85086889844&partnerID=8YFLogxK
U2 - 10.1109/JSTQE.2020.2991386
DO - 10.1109/JSTQE.2020.2991386
M3 - Article
AN - SCOPUS:85086889844
VL - 27
JO - IEEE Journal of Selected Topics in Quantum Electronics
JF - IEEE Journal of Selected Topics in Quantum Electronics
SN - 1077-260X
IS - 1
M1 - 4700116
ER -