{
  "abstract": "Extrinsically chiral metasurfaces can exhibit pronounced chiral responses in planar structures without intrinsic chirality, making them attractive for spin-selective light manipulation. Here, we propose a transmissive all-dielectric terahertz metasurface for image edge detection. Owing to the extrinsic chiral response, the metasurface enables edge-enhanced imaging under right-handed circularly polarized incidence near 0.69 THz, while preserving bright-field imaging under left-handed circularly polarized incidence. Spatial-frequency analysis shows that the effective numerical aperture of the device is approximately 0.4, indicating the terahertz image edge detection can be achieved over a broad spatial-frequency range. This work provides a new design route toward transmissive terahertz all-optical image processing with spin selectivity and a large numerical aperture.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.25147",
  "author_total": 6,
  "authors": [
    {
      "name": "Yuxin Tang"
    },
    {
      "name": "Shichao Zhao"
    },
    {
      "name": "Li Luo"
    },
    {
      "name": "Tingting Tang"
    },
    {
      "name": "Hang Xu"
    },
    {
      "name": "Jie Li"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/chhsvgfb3ekae.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.25147",
  "fulltext_url": null,
  "id": "chhsvgfb3ekae",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.25147",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "2504|Metamaterials and Metasurfaces Applications"
    ]
  ],
  "openalex": "W7214071398",
  "pdf_url": "https://arxiv.org/pdf/2609.25147",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/chhsvgfb3ekae.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:39Z",
      "native_id": "2609.25147",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.25147"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Spin-multiplexed terahertz image edge detection based on extrinsic chirality in all-dielectric metasurface",
  "title_text": "Spin-multiplexed terahertz image edge detection based on extrinsic chirality in all-dielectric metasurface",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:39Z",
  "url": "https://research.draconitic.com/paper/chhsvgfb3ekae",
  "venue": "arXiv",
  "versions": []
}