{
  "annotation_id": "28a69099-86bc-4eae-8b63-9b81f6a5f35a",
  "date_created": "2026-03-02T18:00:53.466000Z",
  "date_modified": "2026-03-02T18:00:53.466000Z",
  "file_hash": "ca28358abd5253c787408f0682bb9b3c02a65847025cefe2286a995dd86def1c",
  "private": false,
  "record": {
    "abstract": "Numerical calculation of vector electromagnetic modes of plano-concave\nmicrocavities reveals that the polarization-dependent reflectivity of a flat\nBragg mirror can lead to unexpected cavity field distributions for nominally\nparaxial modes. Even in a rotationally symmetric resonator, certain pairs of\norbital angular momenta are necessarily mixed in an excitation-independent way\nto form doublets. A characteristic mixing angle is identified, which even in\nthe paraxial limit can be designed to have large values. This correction to\nGaussian theory is zeroth-order in deviations from paraxiality. We discuss the\nresulting nonuniform polarization fields. Observation will require small\ncavities with sufficiently high Q. Possible applications are proposed.",
    "arxiv_id": "physics/0411090",
    "authors": [
      "David H. Foster",
      "Jens U. Noeckel"
    ],
    "categories": [
      "physics.optics",
      "physics.class-ph"
    ],
    "doi": "10.1364/OL.29.002788",
    "journal_ref": "Optics Letters Vol. 29, p. 2788 (2004)",
    "title": "Bragg-induced orbital angular-momentum mixing in paraxial high-finesse   cavities",
    "url": "https://arxiv.org/abs/physics/0411090"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0fcfaf90-f4d9-470d-81b5-afa5555bc090",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}