{
  "annotation_id": "77262d8c-5bb1-408c-ae86-7fb6d44bd8f8",
  "date_created": "2026-03-02T18:00:53.237000Z",
  "date_modified": "2026-03-02T18:00:53.237000Z",
  "file_hash": "54f0160536d3975eee5dad538d2e69763ae22026ae1eae2dc66cbf7b3a8cb6bc",
  "private": false,
  "record": {
    "abstract": "We have performed high resolution spectroscopy of rubidium with a single mode\ncontinuous wave distributed feedback (DFB) laser diode. The saturation spectrum\nof the D_2-line of 85Rb and 87Rb was recorded with a resolution close to the\nnatural line width. The emission frequency was actively stabilized to\nDoppler-free transitions with a relative accuracy of better than 7 parts in\n10^9 using commercially available servo devices only. An output power of 80 mW\nwas sufficient to allow for two-photon spectroscopy of the 5S-5D-transition of\n87Rb. Further, we report on the spectral properties of the DFB diode, its\ntuning range and its frequency modulation properties. The line width of the\ndiode laser, determined with high resolution Doppler free two photon\nspectroscopy, was 4 MHz without applying any active stabilization techniques.\nFor time scales below 5 us the line width drops below 2 MHz.",
    "arxiv_id": "physics/0410256",
    "authors": [
      "S. Kraft",
      "A. Deninger",
      "Ch. Truck",
      "J. Fortagh",
      "F. Lison",
      "C. Zimmermann"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1002/lapl.200410155",
    "title": "Rubidium Spectroscopy at 778-780 nm with a Distributed Feedback Laser   Diode",
    "url": "https://arxiv.org/abs/physics/0410256"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7c5464e3-5b2c-4d60-bcad-3deddf91adc9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}