{
  "annotation_id": "42181198-8f52-47fd-8912-d380972cc07e",
  "date_created": "2026-03-02T18:01:07.659000Z",
  "date_modified": "2026-03-02T18:01:07.659000Z",
  "file_hash": "2066c01b77dc8b4b98d055a64db9e6021b0022ce2e126f465e2046b876db4527",
  "private": false,
  "record": {
    "abstract": "We have performed sub-Doppler spectroscopy on the narrow intercombination\nline of cold calcium atoms using the amplified output of a femtosecond laser\nfrequency comb. Injection locking of a 657-nm diode laser with a femtosecond\ncomb allows for two regimes of amplification, one in which many lines of the\ncomb are amplified, and one where a single line is predominantly amplified. The\noutput of the laser in both regimes was used to perform kilohertz-level\nspectroscopy. This experiment demonstrates the potential for high-resolution\nabsolute-frequency spectroscopy over the entire spectrum of the frequency comb\noutput using a single high-finesse optical reference cavity.",
    "arxiv_id": "physics/0605034",
    "authors": [
      "T. M. Fortier",
      "Y. Le Coq",
      "J. E. Stalnaker",
      "D. Ortega",
      "S. A. Diddams",
      "C. W. Oates",
      "L. Hollberg"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevLett.97.163905",
    "journal_ref": "Phys. Rev. Lett., 97, 163905 (2006)",
    "title": "Kilohertz-resolution spectroscopy of cold atoms with an optical   frequency comb",
    "url": "https://arxiv.org/abs/physics/0605034"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e8ce94bf-baee-46c4-98c9-4962ee47b742",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}