Non-local metasurfaces for spectrally decoupled wavefront manipulation and eye tracking

Area of Science:

• Optics and Photonics
• Materials Science
• Nanotechnology

Background:

• Metasurfaces manipulate light using nanostructures, offering localized control but limited spectral control.
• Emerging applications demand flat, high-Q optical elements for energy storage and precise spectral wavefront manipulation.

Purpose of the Study:

• To demonstrate high-Q, non-local metasurfaces with atomically thin elements.
• To achieve enhanced light-matter interaction and decoupled optical functions across different wavelengths.
• To explore applications in eye tracking systems for eyewear.

Main Methods:

• Fabrication of atomically thin metasurface elements.
• Characterization of optical properties, focusing on Q-factor and spectral control.
• Integration of metasurfaces into eyewear for eye-tracking demonstration.

Main Results:

• Demonstrated high-Q, non-local metasurfaces with enhanced light-matter interaction.
• Achieved fully decoupled optical functions at different wavelengths.
• Successfully implemented a metasurface in eyewear for eye tracking, enabling clear visible light transmission and near-infrared eye imaging.

Conclusions:

• Atomically thin, high-Q metasurfaces offer a new paradigm for optical element design.
• These metasurfaces provide superior spectral control and light-matter interaction.
• The demonstrated eye-tracking application highlights the potential of metasurfaces in integrated optical systems.