{
  "annotation_id": "6b9fdd1b-876e-4b56-9ef6-c367a48996e0",
  "date_created": "2026-03-02T18:01:10.811000Z",
  "date_modified": "2026-03-02T18:01:10.811000Z",
  "file_hash": "16bdb71d185a97cb5ce7a6b800f56e574fe01b2e2d78529e363c85b83331171f",
  "private": false,
  "record": {
    "abstract": "An erbium doped micro-laser is demonstrated utilizing $\\mathrm{SiO_{2}}$\nmicrodisk resonators on a silicon chip. Passive microdisk resonators exhibit\nwhispering gallery type (WGM) modes with intrinsic optical quality factors of\nup to $6\\times{10^{7}}$ and were doped with trivalent erbium ions (peak\nconcentration $\\mathrm{\\sim3.8\\times{10^{20}cm^{-3})}}$ using MeV ion\nimplantation. Coupling to the fundamental WGM of the microdisk resonator was\nachieved by using a tapered optical fiber. Upon pumping of the $^{4}%\nI_{15/2}\\longrightarrow$ $^{4}I_{13/2}$ erbium transition at 1450 nm, a gradual\ntransition from spontaneous to stimulated emission was observed in the 1550 nm\nband. Analysis of the pump-output power relation yielded a pump threshold of 43\n$\\mathrm{\\mu}$W and allowed measuring the spontaneous emission coupling factor:\n$\\beta\\approx1\\times10^{-3}$.",
    "arxiv_id": "physics/0608270",
    "authors": [
      "T. J. Kippenberg",
      "J. Kalkman",
      "A. Polman",
      "K. J. Vahala"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevA.74.051802",
    "title": "Demonstration of an erbium doped microdisk laser on a silicon chip",
    "url": "https://arxiv.org/abs/physics/0608270"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8d108c2e-1e19-4db0-a87f-b89a0549ba61",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}