{
  "annotation_id": "56595a51-9eea-4c17-81d5-6323cee3296f",
  "date_created": "2026-03-02T18:00:50.373000Z",
  "date_modified": "2026-03-02T18:00:50.373000Z",
  "file_hash": "19dde2aa4aca3748c5d5f4b197c690e7a123bceb6735bd62b0f8601caa8bf045",
  "private": false,
  "record": {
    "abstract": "We present a study of orbital angular momentum transfer from pump to\ndown-converted beams in a type-II Optical Parametric Oscillator. Cavity and\nanisotropy effects are investigated and demostrated to play a central role in\nthe transverse mode dynamics. While the idler beam can oscillate in a\nLaguerre-Gauss mode, the crystal birefringence induces an astigmatic effect in\nthe signal beam that prevents the resonance of such mode.",
    "arxiv_id": "physics/0403021",
    "authors": [
      "M. Martinelli",
      "J. A. O. Huguenin",
      "P. Nussenzveig",
      "A. Z. Khoury"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevA.70.013812",
    "journal_ref": "Phys. Rev. A 70, 013812 (2004)",
    "title": "Orbital angular momentum exchange in an optical parametric oscillator",
    "url": "https://arxiv.org/abs/physics/0403021"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "61b2ff47-955b-4d98-813f-683c7412373a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}