{
  "annotation_id": "e80bf8c1-7355-4127-9bdd-3ec427b32798",
  "date_created": "2026-03-02T18:00:36.161000Z",
  "date_modified": "2026-03-02T18:00:36.161000Z",
  "file_hash": "b1b5d671da45f19bb7a96690029408d0f28768eb41a9333f681617ea2944ce98",
  "private": false,
  "record": {
    "abstract": "An extended cavity diode laser operating in the Littrow configuration\nemitting near 657 nm is stabilized via its injection current to a reference\ncavity with a finesse of more than 10^5 and a corresponding resonance linewidth\nof 14 kHz. The laser linewidth is reduced from a few MHz to a value below 30\nHz. The compact and robust setup appears ideal for a portable optical frequency\nstandard using the Calcium intercombination line.",
    "arxiv_id": "physics/0107021",
    "authors": [
      "Adrien Schoof",
      "Jan Gruenert",
      "Stephan Ritter",
      "Andreas Hemmerich"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/OL.26.001562",
    "journal_ref": "Optics Letters, vol. 26, pp. 1562 - 1564 (2001)",
    "title": "Reducing the linewidth of a diode laser below 30 Hz by stabilization to   a reference cavity with finesse above 10^5",
    "url": "https://arxiv.org/abs/physics/0107021"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0034aec3-c6ee-4436-bc67-f036ada04551",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}