{
  "annotation_id": "125f7733-f8f8-4f6a-b208-9414b2827db6",
  "date_created": "2026-03-02T18:01:10.130000Z",
  "date_modified": "2026-03-02T18:01:10.130000Z",
  "file_hash": "28578bcc07a582f8c6f7531370702eb0a38d7902ee59fa44d63b4013c4fc66b1",
  "private": false,
  "record": {
    "abstract": "We present detailed experimental and numerical studies of random lasing in\nweakly scattering systems. The interference of scattered light, which is weak\nin the passive systems, is greatly enhanced in the presence of high gain,\nproviding coherent and resonant feedback for lasing. The lasing modes are\nconfined in the vicinity of the pumped volume due to absorption of emitted\nlight outside it. In the ballistic regime where the size of gain volume is less\nthan the scattering mean free path, lasing oscillation occurs along the\ndirection in which the gain volume is most extended, producing directional\nlaser output. The feedback for lasing originates mainly from backscattering of\nparticles near the boundaries of pumped region. It results in nearly constant\nfrequency spacing of lasing modes, which scales inversely with the maximum\ndimension of the gain volume.",
    "arxiv_id": "physics/0606105",
    "authors": [
      "X. Wu",
      "W. Fang",
      "A. Yamilov",
      "A. A. Chabanov",
      "A. A. Asatryan",
      "L. C. Botten",
      "H. Cao"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevA.74.053812",
    "title": "Random lasing in weakly scattering systems",
    "url": "https://arxiv.org/abs/physics/0606105"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7ca3a192-1b13-4453-9ad0-473f888495e3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}