Arbitrary independent wavefront shaping at dual frequency with an all-silicon metasurface
Abstract
Conventional metasurfaces are inherently frequency-selective, limiting wavefront control to a single operating frequency. Achieving independent manipulation at multiple frequencies remains a significant challenge for expanding the capabilities of integrated optics. Here, we propose and demonstrate an all-silicon metasurface platform that enables arbitrary independent wavefront shaping at two distinct terahertz frequencies. Our design leverages meta-molecules that synergize geometric and propagation phases to decouple the phase profiles for each frequency under a single polarization. This work provides a versatile platform for spatial-domain multiplexing, paving the way for high-capacity communication and multifunctional terahertz photonic devices.
Fields of Study & Subjects
Metamaterials and Metasurfaces Applications
Acoustic Wave Phenomena Research
Advanced Antenna and Metasurface Technologies
Publication details
- Journal / source
- Nanoscale
- Publisher
- Royal Society of Chemistry (RSC)
- Volume
- 18
- Issue
- 12
- Pages
- 6618–6628
- Publication date
- 1 January 2026
- Language
- EN