Inverse design of perimeter-controlled InAs-assisted metasurface for two-dimensional dynamic beam steering
The current commercially viable light detection and ranging systems demand continuous, full-scene, and dynamic two-dimensional point scanning, while featuring large aperture size to ensure long distance operation. However, the biasing architecture of large-area arrays with numerous individually cont...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2022-09-01
|
| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2022-0376 |
| _version_ | 1797832590237892608 |
|---|---|
| author | Sabri Raana Mosallaei Hossein |
| author_facet | Sabri Raana Mosallaei Hossein |
| author_sort | Sabri Raana |
| collection | DOAJ |
| description | The current commercially viable light detection and ranging systems demand continuous, full-scene, and dynamic two-dimensional point scanning, while featuring large aperture size to ensure long distance operation. However, the biasing architecture of large-area arrays with numerous individually controlled tunable elements is substantially complicated. Herein, inverse design of a perimeter-controlled active metasurface for two-dimensional dynamic beam steering at mid-infrared regime is theoretically presented. The perimeter-control approach simplifies biasing architecture by allowing column-row addressing of the elements. The metasurface consists of a periodic array of plasmonic patch nanoantennas in a metal-insulator-metal configuration, wherein two active layers of indium arsenide are incorporated into its building block. The metasurface profile facilitates wide phase modulation of ≈355°$\approx 355^{\circ} $ on the reflected light at the individual element level through applying independent voltages to its respective columns and rows. The multi-objective genetic algorithm (GA) for optimizing user-defined metrics toward shaping desired far-zone radiation pattern is implemented. It is demonstrated that multi-objective GA yields better results for directivity and spatial resolution of perimeter-controlled metasurface by identifying the design tradeoffs inherent to the system, compared to the single-objective optimizer. A high directivity and continuous beam scanning with full and wide field-of-view along the azimuth and elevation angles are respectively maintained. |
| first_indexed | 2024-04-09T14:10:11Z |
| format | Article |
| id | doaj.art-c21fde5a0d424538afdbc6f36c66889c |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-04-09T14:10:11Z |
| publishDate | 2022-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-c21fde5a0d424538afdbc6f36c66889c2023-05-06T15:31:51ZengDe GruyterNanophotonics2192-86062192-86142022-09-0111204515453010.1515/nanoph-2022-0376Inverse design of perimeter-controlled InAs-assisted metasurface for two-dimensional dynamic beam steeringSabri Raana0Mosallaei Hossein1Department of Electrical and Computer Engineering, Northeastern University, Boston, MA02115, USADepartment of Electrical and Computer Engineering, Northeastern University, Boston, MA02115, USAThe current commercially viable light detection and ranging systems demand continuous, full-scene, and dynamic two-dimensional point scanning, while featuring large aperture size to ensure long distance operation. However, the biasing architecture of large-area arrays with numerous individually controlled tunable elements is substantially complicated. Herein, inverse design of a perimeter-controlled active metasurface for two-dimensional dynamic beam steering at mid-infrared regime is theoretically presented. The perimeter-control approach simplifies biasing architecture by allowing column-row addressing of the elements. The metasurface consists of a periodic array of plasmonic patch nanoantennas in a metal-insulator-metal configuration, wherein two active layers of indium arsenide are incorporated into its building block. The metasurface profile facilitates wide phase modulation of ≈355°$\approx 355^{\circ} $ on the reflected light at the individual element level through applying independent voltages to its respective columns and rows. The multi-objective genetic algorithm (GA) for optimizing user-defined metrics toward shaping desired far-zone radiation pattern is implemented. It is demonstrated that multi-objective GA yields better results for directivity and spatial resolution of perimeter-controlled metasurface by identifying the design tradeoffs inherent to the system, compared to the single-objective optimizer. A high directivity and continuous beam scanning with full and wide field-of-view along the azimuth and elevation angles are respectively maintained.https://doi.org/10.1515/nanoph-2022-0376active metasurfacehigh-k dielectricperimeter-controlled architecturetwo-dimensional beam scanning |
| spellingShingle | Sabri Raana Mosallaei Hossein Inverse design of perimeter-controlled InAs-assisted metasurface for two-dimensional dynamic beam steering Nanophotonics active metasurface high-k dielectric perimeter-controlled architecture two-dimensional beam scanning |
| title | Inverse design of perimeter-controlled InAs-assisted metasurface for two-dimensional dynamic beam steering |
| title_full | Inverse design of perimeter-controlled InAs-assisted metasurface for two-dimensional dynamic beam steering |
| title_fullStr | Inverse design of perimeter-controlled InAs-assisted metasurface for two-dimensional dynamic beam steering |
| title_full_unstemmed | Inverse design of perimeter-controlled InAs-assisted metasurface for two-dimensional dynamic beam steering |
| title_short | Inverse design of perimeter-controlled InAs-assisted metasurface for two-dimensional dynamic beam steering |
| title_sort | inverse design of perimeter controlled inas assisted metasurface for two dimensional dynamic beam steering |
| topic | active metasurface high-k dielectric perimeter-controlled architecture two-dimensional beam scanning |
| url | https://doi.org/10.1515/nanoph-2022-0376 |
| work_keys_str_mv | AT sabriraana inversedesignofperimetercontrolledinasassistedmetasurfacefortwodimensionaldynamicbeamsteering AT mosallaeihossein inversedesignofperimetercontrolledinasassistedmetasurfacefortwodimensionaldynamicbeamsteering |