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Related Experiment Video

Updated: Jul 9, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

Two-dimensional pixel-level addressable mid-infrared metasurface spatial light modulator.

Cosmin-Constantin Popescu1, Maarten Robbert Anton Peters1, Oleg Maksimov2

  • 1Department of Materials Science & Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.

Nature Communications
|July 7, 2026
PubMed
Summary

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This summary is machine-generated.

We developed a scalable 2D active metasurface using phase-change materials for dynamic light control. This breakthrough enables the first transmissive mid-infrared amplitude-only spatial light modulator for advanced optical applications.

Area of Science:

  • Photonics
  • Materials Science
  • Electrical Engineering

Background:

  • Active metasurfaces offer dynamic light control for applications like beam steering and adaptive optics.
  • Existing two-dimensional (2D) electrically addressable metasurface arrays have faced limitations in scalability and integration.

Purpose of the Study:

  • To introduce a scalable 2D architecture for active metasurfaces.
  • To demonstrate the first transmissive mid-infrared amplitude-only spatial light modulator (SLM).

Main Methods:

  • Integration of phase-change materials with metasurfaces.
  • Fabrication using standard silicon photonic foundry processing and backend-of-line integration.
  • Implementation of a crossbar addressing scheme with multilayer backend metal interconnects and silicon diode selectors for each pixel.

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Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
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Published on: June 7, 2019

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Related Experiment Videos

Last Updated: Jul 9, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Main Results:

  • Realization of a scalable 2D architecture for active metasurfaces.
  • Demonstration of the first transmissive mid-infrared amplitude-only SLM.
  • Successful suppression of sneak-path currents using integrated silicon diode selectors, crucial for large array scaling.

Conclusions:

  • The developed architecture provides a foundry-compatible route to high-density, large-area active metasurfaces.
  • Independently tunable pixels are achievable, paving the way for advanced optical devices.
  • This work overcomes previous limitations in 2D electrically addressable metasurface arrays.