{
  "annotation_id": "ed3ff90c-3fcf-4ad6-85de-016db5fc1102",
  "date_created": "2026-03-02T18:00:32.627000Z",
  "date_modified": "2026-03-02T18:00:32.627000Z",
  "file_hash": "a00c6cce4698022567468bba2f2f966a805cfcfbe0fdbbc3e588cfb71a9e7ec5",
  "private": false,
  "record": {
    "abstract": "We have applied laser calorimetry to the measurement of optical absorption in\nmono-crystalline sapphire at cryogenic temperatures. Sapphire is a promising\ncandidate for the mirror substrates of the Large-scale Cryogenic Gravitational\nwave Telescope. The optical absorption coefficients of different sapphire\nsamples at a wavelength of 1.064(micro)m at 5K were found to average 90ppm/cm.",
    "arxiv_id": "physics/0101075",
    "authors": [
      "Takayuki Tomaru",
      "Takashi Uchiyama",
      "Daisuke Tatsumi",
      "Shinji Miyoki",
      "Masatake Ohashi",
      "Kazuaki Kuroda",
      "Toshikazu Suzuki",
      "Akira Yamamoto",
      "Takakazu Shintomi"
    ],
    "categories": [
      "physics.ins-det",
      "gr-qc"
    ],
    "doi": "10.1016/S0375-9601(01)00191-8",
    "journal_ref": "Phys.Lett. A283 (2001) 80-84",
    "title": "Cryogenic measurement of the optical absorption coefficient in sapphire   crystals at 1.064(micro)m for the Large-scale Cryogenic Gravitational wave   Telescope",
    "url": "https://arxiv.org/abs/physics/0101075"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "97845481-f4b2-4bc7-9be6-4f3da656b49b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}