{
  "abstract": "Spin-orbit interaction (SOI) of light manifests as the generation of a spin-dependent vortex beam and the spin-Hall effect when a spin-polarized beam interacts with an optical interface at normal and oblique incidence, respectively. The weak SOI limits its widespread use for quantifying physical quantities in various applications. We demonstrate a significantly enhanced SOI effect, approaching the strong-coupling regime, by retroreflecting a nonparaxial focused beam of light at a multilayer dielectric mirror. The large difference in angle-of-incidence-dependent Fresnel reflection coefficients (r-TE, r-TM ) introduced by the mirror simultaneously enhances the spin-orbit-converted vortex-beam amplitude and the spin-Hall effect in the reflected beam. Near-field superposition of the orthogonal polarization components in the reflected beam yields a spatially nonuniform beam field with C-, V-, and L- polarization singularities. These topological features are mapped and are used to demonstrate the transverse and 3D spin-Hall effect in the focal region. The superposition of enhanced optical near-fields and the lossless broadband nature of the mirror reflectivity are expected to enable a variety of polarization topologies and to tailor their features via designed mirror reflectivities.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.15117",
  "author_total": 2,
  "authors": [
    {
      "name": "Dileep Kumar Upadhyay"
    },
    {
      "name": "Nirmal K. Viswanathan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/16h8gf95vvw35.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.15117",
  "fulltext_url": null,
  "id": "16h8gf95vvw35",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.15117",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "3107|Orbital Angular Momentum in Optics"
    ]
  ],
  "openalex": "W7213310404",
  "pdf_url": "https://arxiv.org/pdf/2609.15117",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/16h8gf95vvw35.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:25Z",
      "native_id": "2609.15117",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.15117"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Enhanced Spin-Orbit Interaction of Light through Complex Fresnel Reflection",
  "title_text": "Enhanced Spin-Orbit Interaction of Light through Complex Fresnel Reflection",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:25Z",
  "url": "https://research.draconitic.com/paper/16h8gf95vvw35",
  "venue": "arXiv",
  "versions": []
}