{
  "annotation_id": "a8d892f5-f928-4197-8434-217cd0664180",
  "date_created": "2026-03-02T18:01:17.822000Z",
  "date_modified": "2026-03-02T18:01:17.822000Z",
  "file_hash": "bcaf5419bc0c68ad60279f968d6e48df987b0633cd4a6c8ee9cf8f76bc7459c5",
  "private": false,
  "record": {
    "abstract": "We consider the coherent population trapping phenomenon in a thermal sodium\natomic beam. We compare the different coherent population trapping schemes that\ncan be established on the D1 line using the Zeeman sublevels of a given ground\nhyperfine state. The coherent population trapping preparation is examined by\nmeans of a Hanle effect configuration. The efficiency of the coherent\npopulation trapping phenomenon has been examined in presence of optical pumping\ninto hyperfine levels external to those of the excited transition. We show that\nboth the contrast and the width of the coherent population trapping resonance\nstrongly decrease when the optical pumping rate is increased. In the\nexperiment, the loss rate due to optical pumping has been controlled by means\nof a laser repump of variable intensity.",
    "arxiv_id": "physics/9611007",
    "authors": [
      "F. Renzoni",
      "W. Maichen",
      "L. Windholz",
      "E. Arimondo"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "title": "Coherent Population Trapping with Losses on the Sodium D1 Line Hanle   Effect",
    "url": "https://arxiv.org/abs/physics/9611007"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bbd266b0-202f-4554-9478-358ac25eedfc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}