{
  "annotation_id": "f2de4330-ab93-4934-9866-6c15224a217e",
  "date_created": "2026-03-02T18:00:39.824000Z",
  "date_modified": "2026-03-02T18:00:39.824000Z",
  "file_hash": "6633cba18ea3eca49d92a3e9b7122c32b3f0222978dbc1d5a78fdb49faefa2bf",
  "private": false,
  "record": {
    "abstract": "For the purposes of measuring the high-frequency complex conductivity of\ncorrelated-electron materials at low temperatures and high magnetic fields, a\nmethod is introduced for performing coherent time-domain terahertz spectroscopy\ndirectly in the cryogenic bore of existing dc and pulsed magnets. Miniature\nfiber-coupled THz emitters and receivers are constructed and are demonstrated\nto work down to 1.5 Kelvin and up to 17 Tesla, for eventual use in higher-field\nmagnets. Maintaining the sub-micron alignment between fiber and antenna during\nthermal cycling, obtaining ultrafast (${\u003c200}$~fs) optical gating pulses at the\nend of long optical fibers, and designing highly efficient devices that work\nwell with low-power optical gating pulses constitute the major technical\nchallenges of this project. Data on a YBCO superconducting thin film and a high\nmobility 2D electron gas is shown.",
    "arxiv_id": "physics/0204016",
    "authors": [
      "S. A. Crooker"
    ],
    "categories": [
      "physics.ins-det",
      "physics.optics"
    ],
    "doi": "10.1063/1.1498904",
    "title": "Fiber-coupled Antennas for Ultrafast Coherent Terahertz Spectroscopy in   Low Temperatures and High Magnetic Fields",
    "url": "https://arxiv.org/abs/physics/0204016"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "350b8083-663d-4724-95a0-35d65a056be9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}