{
  "annotation_id": "844048e2-950a-4548-a96b-d0572f54fa4a",
  "date_created": "2026-03-02T18:00:36.226000Z",
  "date_modified": "2026-03-02T18:00:36.226000Z",
  "file_hash": "359701552dedcf4cc92469e1367a6546bac4c7237b570a4956dff835e73036fe",
  "private": false,
  "record": {
    "abstract": "Based upon our previous works (Eur.Phys.J.D 6, 319(1999); Chin.Phys.Lett. 18,\n236(2001)), we develop a classical approach to calculate the high-order\nharmonic generation of the laser driven atoms and molecules. The Coulomb\nsingularities in the system have been removed by a regularization procedure.\nAction-angle variables have been used to generate the initial microcanonical\ndistribution which satisfies the inversion symmetry of the system. The\nnumerical simulation show, within a proper laser intensity, a harmonic plateau\nwith only odd harmonics appears. At higher intensities, the spectra become\nnoisier because of the existence of chaos. With further increase in laser\nintensity, ionization takes place, and the high-order harmonics disappear. Thus\nchaos introduces noise in the spectra, and ionization suppresses the harmonic\ngeneration, with the onset of the ionization follows the onset of chaos.",
    "arxiv_id": "physics/0103007",
    "authors": [
      "Chaohong Lee",
      "Yiwu Duan",
      "Wing-Ki Liu",
      "Jian-Min Yuan",
      "Lei Shi",
      "Xiwen Zhu",
      "Kelin Gao"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevA.64.043410",
    "journal_ref": "Phys. Rev. A 64, 043410 (2001)",
    "title": "Classical calculation of high-order harmonic generation of atomic and   molecular gases in intense laser fields",
    "url": "https://arxiv.org/abs/physics/0103007"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b468019e-3cba-41b6-83d9-154903af912f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}