Ultraspectral Imaging Based on Metasurfaces with Freeform Shaped Meta‐Atoms (Laser Photonics Rev. 16(7)/2022)

On-Chip Ultraspectral Imaging In article number 2100663, Jiawei Yang, Kaiyu Cui, Yidong Huang and colleagues demonstrate a snapshot on-chip ultraspectral imager based on freeform metasurfaces with both high spatial resolution of 356 × 436 spectral 0.5 nm, which will provide new paradigm for future intellisense. The shaped meta-atoms are generated proposed general method could be utilized in forward or inverse design other novel metasurfaces.