Near-infrared polarimetric imaging with nonlinear flat-optics
Abstract
A compact and broadband polarimetric imaging platform is presented, based on second-harmonic generation (SHG) in nonlinear flat-optics. The system employs periodic all-dielectric AlGaAs gratings to induce polarization-dependent SH emission, enabling pixel by pixel direct retrieval of the full Stokes vector from an input intensity distribution in the near-infrared range. By engineering the geometry and orientation of the polarimetric units, sensitivity to linear and circular polarization components is achieved. A superpixel design comprising four polarimetric structures allows accurate reconstruction of the polarization state without moving parts or sequential measurements. This approach offers a scalable, passive, and cost-effective solution for polarimetric imaging, particularly suited for near-infrared applications.
Keywords
Cite
@article{arxiv.2512.01525,
title = {Near-infrared polarimetric imaging with nonlinear flat-optics},
author = {Evgenii Menshikov and Marco A. López Sánchez and Paolo Franceschini and Andrea Tognazzi and Domenico de Ceglia and Kristina Frizyuk and Costantino De Angelis},
journal= {arXiv preprint arXiv:2512.01525},
year = {2025}
}
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