A new way to control infrared light in real time
EPFL researchers have created ultra‑thin silicon metasurfaces that can dynamically tune their interaction with mid‑infrared light in real time, achieving record optical performance. By using integrated micro‑heaters and ultrafast laser pulses, the devices can modulate light at kilohertz to nanosecond speeds without altering their physical structure. The platform is scalable, compatible with large‑scale semiconductor manufacturing, and could enable compact, low‑power free‑space optical communications and adaptive chemical sensing.
EPFL researchers have created ultra‑thin silicon metasurfaces that can dynamically tune their interaction with mid‑infrared light in real time, achieving record optical performance. By using integrated micro‑heaters and ultrafast laser pulses, the devices can modulate light at kilohertz to nanosecond speeds without altering their physical structure. The platform is scalable, compatible with large‑scale semiconductor manufacturing, and could enable compact, low‑power free‑space optical communications and adaptive chemical sensing.
This breakthrough provides a foundation for faster, more precise photonic sensors that can be integrated into Swiss AI systems for real‑time data analysis and decision making.
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