Near-infrared polarimetric imaging with nonlinear flat-optics
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arXiv
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| Format: | Preprint |
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2025
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| author | Menshikov, Evgenii Sánchez, Marco A. López Franceschini, Paolo Tognazzi, Andrea de Ceglia, Domenico Frizyuk, Kristina De Angelis, Costantino |
| author_facet | Menshikov, Evgenii Sánchez, Marco A. López Franceschini, Paolo Tognazzi, Andrea de Ceglia, Domenico Frizyuk, Kristina De Angelis, Costantino |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_01525 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Near-infrared polarimetric imaging with nonlinear flat-optics Menshikov, Evgenii Sánchez, Marco A. López Franceschini, Paolo Tognazzi, Andrea de Ceglia, Domenico Frizyuk, Kristina De Angelis, Costantino Optics 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. |
| title | Near-infrared polarimetric imaging with nonlinear flat-optics |
| topic | Optics |
| url | https://arxiv.org/abs/2512.01525 |