{
  "annotation_id": "f79a1e45-78e0-45f5-9436-73286eb74e16",
  "date_created": "2026-03-02T18:00:43.528000Z",
  "date_modified": "2026-03-02T18:00:43.528000Z",
  "file_hash": "d6828bff2358b7ad75b4943fccba79cdda4ca1b3ca5f39616200c9b7190f8333",
  "private": false,
  "record": {
    "abstract": "Free-space propagation can be described as a shearing of the Wigner\ndistribution function in the spatial coordinate; this shearing is linear in\nparaxial approximation but assumes a more complex shape for wide-angle\npropagation. Integration in the frequency domain allows the determination of\nnear-field diffraction, leading to the well known Fresnel diffraction when\nsmall angles are considered and allowing exact prediction of wide-angle\ndiffraction. The authors use this technique to demonstrate evanescent wave\nformation and diffraction elimination for very small apertures.",
    "arxiv_id": "physics/0305026",
    "authors": [
      "J. B. Almeida",
      "V. Lakshminarayanan"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1078/0030-4026-00272",
    "journal_ref": "Optik 114 (7): 333-335 (2003)",
    "title": "Wide angle near-field diffraction and Wigner distribution",
    "url": "https://arxiv.org/abs/physics/0305026"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4c08c47e-76fa-4684-bc81-eb8036faecd3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}