{
  "annotation_id": "62f943ed-a8f2-4416-9045-146e677f7297",
  "date_created": "2026-03-02T18:00:52.895000Z",
  "date_modified": "2026-03-02T18:00:52.895000Z",
  "file_hash": "089dc0d45ee65b32e313c699145883711c1eff6cac0cde4ca5ea69e421efa439",
  "private": false,
  "record": {
    "abstract": "We demonstrate femtosecond performance of an ultra-broadband\nhigh-index-contrast saturable Bragg reflector consisting of a\nsilicon/silicon-dioxide/germanium structure that is fully compatible with CMOS\nprocessing. This device offers a reflectivity bandwidth of over 700 nm and\nsub-picosecond recovery time of the saturable loss. It is used to achieve\nmode-locking of an Er-Yb:glass laser centered at 1540 nm, generating 220 fs\npulses, with the broadest output spectrum to date.",
    "arxiv_id": "physics/0411232",
    "authors": [
      "F. J. Grawert",
      "S. Akiyama",
      "F. O. Ilday",
      "J. Liu",
      "J. T. Gopinath",
      "H. M. Shen",
      "K. Wada",
      "E. P. Ippen",
      "L. C. Kimerling",
      "F. X. Kaertner"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/OL.30.000329",
    "title": "220 fs Er-Yb:glass laser mode-locked by a broadband low-loss Si/Ge   saturable absorber",
    "url": "https://arxiv.org/abs/physics/0411232"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f1ad24d9-8d55-4bec-9968-862d8e49de85",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}