{
  "annotation_id": "d72b75f7-3d20-4e0f-a384-41fe6b497a1f",
  "date_created": "2026-03-02T18:00:50.269000Z",
  "date_modified": "2026-03-02T18:00:50.269000Z",
  "file_hash": "a7486b31a6ba138172dbf57b0b8cd383d8351e6fd1c204fb91ccde40323c397a",
  "private": false,
  "record": {
    "abstract": "Second harmonic optical coherence tomography, which uses coherence gating of\nsecond-order nonlinear optical response of biological tissues for imaging, is\ndescribed and demonstrated. Femtosecond laser pulses were used to excite second\nharmonic waves from collagen harvested from rat tail tendon and a reference\nnonlinear crystal. Second harmonic interference fringe signals were detected\nand used for image construction. Because of the strong dependence of second\nharmonic generation on molecular and tissue structures, this technique offers\ncontrast and resolution enhancement to conventional optical coherence\ntomography.",
    "arxiv_id": "physics/0402060",
    "authors": [
      "Yi Jiang",
      "Ivan Tomov",
      "Yimin Wang",
      "Zhongping Chen"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/OL.29.001090",
    "title": "Second harmonic optical coherence tomography",
    "url": "https://arxiv.org/abs/physics/0402060"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9834f5c1-bef0-40f9-9328-d5584c9dab43",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}