{
  "annotation_id": "6c08853f-36e6-4fef-8a59-d6675e6a9564",
  "date_created": "2026-03-02T18:00:47.012000Z",
  "date_modified": "2026-03-02T18:00:47.012000Z",
  "file_hash": "a889d39c278556acca818eb57c6763ec18492a5b5d80b5b82eb6d0bdecb4eef7",
  "private": false,
  "record": {
    "abstract": "We experimentally demonstrate for the first time that a radially polarized\nfield can be focussed to a spot size significantly smaller (0.16(1) lambda^2)\nthan for linear polarization (0.26 lambda^2). The effect of the vector\nproperties of light is shown by a comparison of the focal intensity\ndistribution for radially and azimuthally polarized input fields. For strong\nfocusing a radially polarized field leads to a longitudinal electric field\ncomponent at the focus which is sharp and centered at the optical axis. The\nrelative contribution of this component is enhanced by using an annular\naperture.",
    "arxiv_id": "physics/0310007",
    "authors": [
      "R. Dorn",
      "S. Quabis",
      "G. Leuchs"
    ],
    "categories": [
      "physics.optics"
    ],
    "title": "Focusing a radially polarized light beam to a significantly smaller spot   size",
    "url": "https://arxiv.org/abs/physics/0310007"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1e5576c7-6e74-4f17-86b3-7f852b00986c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}