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Related Experiment Video

Updated: Aug 30, 2025

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Electrically Driven Reprogrammable Vanadium Dioxide Metasurface Using Binary Control for Broadband Beam Steering.

Matthieu Proffit¹, Sara Pelivani¹, Pascal Landais²

¹School of Physics and AMBER, Trinity College Dublin, Dublin 2, Ireland.

ACS Applied Materials & Interfaces

|September 1, 2022

Summary

This summary is machine-generated.

Binary control of optical phased arrays enables reconfigurable metasurfaces. This approach achieves wide-angle beam steering with a vanadium dioxide-based nanoresonator, overcoming limitations of continuous tuning for nanophotonics.

Keywords:

LIDAR beam steering binary control inverse design nanoresonator phased array reconfigurable metasurface vanadium dioxide

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Last Updated: Aug 30, 2025

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Published on: June 7, 2019

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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

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Published on: April 1, 2020

Area of Science:

Nanophotonics
Metasurfaces
Optical Engineering

Background:

Resonant optical phased arrays offer reconfigurable metasurfaces in optical and near-infrared (NIR) regimes.
Continuously tunable resonant structures face challenges like limited phase range and sensitivity.

Purpose of the Study:

To investigate 1-bit (binary) control for overcoming limitations in tunable resonant structures.
To explore the theoretical capabilities of binary-controlled phased arrays for beam steering.

Main Methods:

Computational investigation of a metasurface for beam steering using a nanoresonator antenna.
Design and optimization of a vanadium dioxide-based metal-insulator-metal structure at 1550 nm using inverse design.
Theoretical first-principles description of phased arrays for performance prediction.

Main Results:

Achieved continuous beam steering over a 90° range using binary control.
Demonstrated a broadband response from 1500 to 1700 nm.
Confirmed robustness to manufacturing imperfections.

Conclusions:

1-bit binary control is a viable mechanism to bypass drawbacks of continuously tunable resonant structures.
The proposed simplified approach enhances performance and robustness for nanophotonic phased array metasurfaces.
This method can be adapted for various materials and functionalities in tunable nanophotonics.