{
  "annotation_id": "d0923358-0b41-4260-91f3-cfe12568e2ed",
  "date_created": "2026-03-02T18:00:35.795000Z",
  "date_modified": "2026-03-02T18:00:35.795000Z",
  "file_hash": "7e2bb84a430fa7e8ed74cdbe5f2975a32f1e4578013b078ab1a84f6ad730e5cb",
  "private": false,
  "record": {
    "abstract": "This paper describes a THz transmission spectrometer for the spectral range\nof 2-65 cm^-1 (100 GHz to 2 THz) with a spectral resolution of at least 1.8\ncm^-1 (50 GHz) where the source, sample, and detector are all fully contained\nin a cryogenic environment. Cyclotron emission from a two-dimensional electron\ngas heated with an electrical current serves as a magnetic field tunable\nsource. The spectrometer is demonstrated at 4.2 K by measuring the resonant\ncyclotron absorption of a second two dimensional electron gas. Unique aspects\nof the spectrometer are that 1) an ultra-broadband detector is used and 2) the\nemitter is run quasi-continuously with a chopping frequency of only 1 Hz. Since\noptical coupling to room temperature components is not necessary, this\ntechnique is compatible with ultra-low temperature (sub 100 mK) operation.",
    "arxiv_id": "physics/0107057",
    "authors": [
      "P. J. Burke",
      "J. P. Eisenstein",
      "L. N. Pfeiffer",
      "K. W. West"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1063/1.1426231",
    "title": "An All-Cryogenic THz Transmission Spectrometer",
    "url": "https://arxiv.org/abs/physics/0107057"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ee509ef4-3e0c-451c-98e8-91f70dfc90c6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}