Angle-Insensitive Spectral Imaging Based on Topology-Optimized Plasmonic Metasurfaces (Laser Photonics Rev. 18(12)/2024)

Abstract

3D Photonic Device for Spatial Mode Bases Mapping

On-chip angle-robust computational spectral imaging based on topology-optimized plasmonic metasurfaces is proposed and experimentally reported in article number 2400255 by Kaiyu Cui, Yidong Huang, and co-workers. The fidelity of spectral reconstruction realized by an auto-encoder is over 98% under a 30° field-of-view, and spectral imaging for a standard color checker is demonstrated. This approach expands the application fields of spectral imaging chips such as wide-angle or off-axis spectral imaging.