{
  "annotation_id": "d23430c1-6c1b-4d18-986d-bd39370346df",
  "date_created": "2026-03-02T18:00:49.780000Z",
  "date_modified": "2026-03-02T18:00:49.780000Z",
  "file_hash": "85035c59f95c86fbd4540c5f0b6ea5ab5c3ea6b669c6e9970181529ab7c2fe69",
  "private": false,
  "record": {
    "abstract": "We describe an experiment showing a spontaneous symmetry breaking phenomenon\nbetween the intensities of the ordinary and extraordinary components of the\nfundamental field in intracavity type-II harmonic generation. It is based on a\ntriply resonant dual cavity containing a type II phase matched $\\chi^{(2)}$\ncrystal pumped at the fundamental frequency $\\omega_0$. The pump beam generates\nin the cavity a second harmonic mode at frequency $2\\omega_0$ which acts as a\npump for frequency degenerate type II parametric down conversion. Under\noperating conditions which are precisely symmetric with respect to the ordinary\nand extraordinary components of the fundamental wave, we have observed a\nbreaking of the symmetry on the intensities of these two waves in agreement\nwith the theoretical predictions.",
    "arxiv_id": "physics/0406049",
    "authors": [
      "Laurent Longchambon",
      "Nicolas Treps",
      "Thomas Coudreau",
      "Julien Laurat",
      "Claude Fabre"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/OL.30.000284",
    "journal_ref": "Optics Letters 30 (2005) 284",
    "title": "Experimental evidence of spontaneous symmetry breaking in intracavity   type-II second harmonic generation with triple resonance",
    "url": "https://arxiv.org/abs/physics/0406049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "10292831-f31b-44c7-9587-9987f1a185c6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}