{
  "abstract": "Quantitative extraction of nonlinear optical tensors at the microscale typically requires sequential polarization scans, mechanical rotations, and careful correction of high-NA polarization distortions. We introduce a single-acquisition tensor metrology approach that simultaneously acquires Raman and second-harmonic generation (SHG) signals and enables rapid reconstruction of both Raman and χ(2) tensors from a single diffraction-limited volume. The central innovation is the use of a tightly focused Bessel–Gauss beam whose intrinsic spatiotemporal structure encodes multiple excitation geometries—normal and finite incidence—within a single measurement. The resulting Fourier-plane SHG pattern contains rich polarization and angular information, eliminating mechanical rotation and reducing acquisition time. Combined with a polarization-preserving dichroic module and graphics processing unit-accelerated ray-tracing global fitting, the method exploits the full two-dimensional SHG emission pattern together with polarization-resolved Raman data. We demonstrate quantitative tensor extraction in LiNbO3 and correlate symmetry breaking across the ferroelectric transition of KH2PO4. This approach establishes rapid, calibration-robust optical tensor tomography for microscale materials.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 26,
  "authors": [
    {
      "name": "Simone Restelli"
    },
    {
      "name": "Oliviero Cannelli"
    },
    {
      "name": "Nicola Colonna"
    },
    {
      "name": "Carmelo Grova"
    },
    {
      "name": "Paolo Usai"
    },
    {
      "name": "Michele Puppin"
    },
    {
      "name": "Mounir Mensi"
    },
    {
      "name": "Francesco Barantani"
    },
    {
      "name": "Yue Meng"
    },
    {
      "name": "Jérémie Teyssier"
    },
    {
      "name": "Malte Oppermann"
    },
    {
      "name": "Francesco Pennacchio"
    },
    {
      "name": "Camila Bacellar"
    },
    {
      "name": "Jérémy Rouxel"
    },
    {
      "name": "Ludmila Diniz Leroy"
    },
    {
      "name": "Oleg Dogadov"
    },
    {
      "name": "Natacha Ohannessian"
    },
    {
      "name": "Daniele Pergolesi"
    },
    {
      "name": "Pietro Galinetto"
    },
    {
      "name": "Przemysław Piekarz"
    },
    {
      "name": "Andrzej Ptok"
    },
    {
      "name": "Swati Chaudhary"
    },
    {
      "name": "Gregory Fiete"
    },
    {
      "name": "Majed Chergui"
    },
    {
      "name": "Edoardo Baldini"
    },
    {
      "name": "Giulia Mancini"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d8dmxmatthb0m.bib",
  "cited_by": 0,
  "doi": "10.1063/5.0331167",
  "fulltext_url": null,
  "id": "d8dmxmatthb0m",
  "issns": [
    "2378-0967"
  ],
  "landing_url": "https://hal.science/hal-05794572v1",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "openalex",
      "3107|Photorefractive and Nonlinear Optics"
    ]
  ],
  "openalex": "W7163881740",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-01",
  "publisher": "AIP Publishing LLC",
  "ris": "https://research.draconitic.com/paper/d8dmxmatthb0m.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:54Z",
      "native_id": "hal-05794572",
      "source": "hal",
      "url": "https://hal.science/hal-05794572v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3107|Photorefractive and Nonlinear Optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Single acquisition reconstruction of nonlinear susceptibility and Raman tensors at the diffraction limit",
  "title_text": "Single acquisition reconstruction of nonlinear susceptibility and Raman tensors at the diffraction limit",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:54Z",
  "url": "https://research.draconitic.com/paper/d8dmxmatthb0m",
  "venue": "APL Photonics",
  "versions": []
}