Multi-foci metalens for spectra and polarization ellipticity recognition and reconstruction

• Published in: Opto-Electronic Science 2023-03, Vol.2 (3), p.220026-220026
• Main Authors: Gao, Hui, Fan, Xuhao, Wang, Yuxi, Liu, Yuncheng, Wang, Xinger, Xu, Ke, Deng, Leimin, Zeng, Cheng, Li, Tingan, Xia, Jinsong, Xiong, Wei
• Format: Article
• Language: English
• Subjects: metalens; multispectral imaging; polarized imaging; spectra and polarization reconstruction
• ISSN: 2097-0382
• DOI: 10.29026/oes.2023.220026

Multispectral and polarized focusing and imaging are key functions that are vitally important for a broad range of optical applications. Conventional techniques generally require multiple shots to unveil desired optical information and are imple-mented via bulky multi-pass systems or mechanically moving parts that are difficult to integrate into compact and integ-rated optical systems. Here, a design of ultra-compact transversely dispersive metalens capable of both spectrum and polarization ellipticity recognition and reconstruction in just a single shot is demonstrated with both coherent and incoher-ent light. Our design is well suited for integrated and high-speed optical information analysis and can significantly reduce the size and weight of conventional devices while simplifying the process of collecting optical information, thereby prom-ising for various applications, including machine vision, minimized spectrometers, material characterization, remote sens-ing, and other areas which require comprehensive optical analysis.