{
  "annotation_id": "666536aa-1eb2-48e1-9c01-62b4ed1d5d4b",
  "date_created": "2026-03-02T18:00:53.558000Z",
  "date_modified": "2026-03-02T18:00:53.558000Z",
  "file_hash": "bae2cdf2d52fc7f5f55154ff2c466bf327d9f3972285f5cb2a017840c641100d",
  "private": false,
  "record": {
    "abstract": "We report the observation of the self-guided propagation of 120 fs, 0.56 mJ\ninfrared radiation in air for distances greater than one meter. In contrast to\nthe known case of filamentation, in the present experiment the laser power is\nlower than the collapse threshold. Therefore the counter balance between Kerr\nself focussing and ionization induced defocussing as the stabilizing mechanism\nis ruled out. Instead, we find evidences of a process in which the transversal\nbeam distribution reshapes into a form similar to a Townes soliton. We include\nnumerical support for this conclusion.",
    "arxiv_id": "physics/0409106",
    "authors": [
      "C. Ruiz",
      "J. San Rom\u00e1n",
      "C. M\u00e9ndez",
      "V. D\u00edaz",
      "L. Plaja",
      "I. Arias",
      "L. Roso"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevLett.95.053905",
    "title": "Observation of spontaneous self-channelling of light in air below the   collapse threshold",
    "url": "https://arxiv.org/abs/physics/0409106"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6dfe088f-aeb2-4216-b8b0-6e168cae9705",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}