{
  "annotation_id": "572831fb-291b-4d6b-b40c-e997ed8d7047",
  "date_created": "2026-03-02T18:00:59.817000Z",
  "date_modified": "2026-03-02T18:00:59.817000Z",
  "file_hash": "562ca400ea4796a909971023de7f98672e800ace256b9e981cc39a3752ca4808",
  "private": false,
  "record": {
    "abstract": "We studied the optical properties of a dielectric photonic crystal structure\nwith spirals arranged in a hexagonal lattice. The dielectric constant of the\nmaterial is 9 and the filling ratio is 15.2%. We found that this kind of\nstructure exhibits a significant polarization gap for light incident along the\naxis of the spirals. The eigenmodes inside the polarization gap are right-hand\n(left-hand) circularly polarized depending on the whether the spirals are\nleft-handed (right-handed). The transmission spectrum of a slab of such a\nstructure has been calculated and matches well with the analysis of the\neigenmodes.",
    "arxiv_id": "physics/0508015",
    "authors": [
      "Jeffrey Chi Wai Lee",
      "C. T. Chan"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/OPEX.13.008083",
    "title": "Polarization gaps in spiral photonic crystals",
    "url": "https://arxiv.org/abs/physics/0508015"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f289dd46-9071-4957-9d99-7b92795b04b9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}