{
  "annotation_id": "348c9e05-545b-4160-9bd6-3454cf2b48af",
  "date_created": "2026-03-02T18:01:03.551000Z",
  "date_modified": "2026-03-02T18:01:03.551000Z",
  "file_hash": "d1689a8dae028b3d172358416afa1f0a55d9b5eb8ec50eb22959fa87dc0be9f1",
  "private": false,
  "record": {
    "abstract": "The quality factor (Q), mode volume (Veff), and room-temperature lasing\nthreshold of microdisk cavities with embedded quantum dots (QDs) are\ninvestigated. Finite element method simulations of standing wave modes within\nthe microdisk reveal that Veff can be as small as 2(lambda/n)^3 while\nmaintaining radiation-limited Qs in excess of 10^5. Microdisks of diameter D=2\nmicrons are fabricated in an AlGaAs material containing a single layer of InAs\nQDs with peak emission at lambda = 1317 nm. For devices with Veff ~2\n(lambda/n)^3, Qs as high as 1.2 x 10^5 are measured passively in the 1.4 micron\nband, using an optical fiber taper waveguide. Optical pumping yields laser\nemission in the 1.3 micron band, with room temperature, continuous-wave\nthresholds as low as 1 microWatt of absorbed pump power. Out-coupling of the\nlaser emission is also shown to be significantly enhanced through the use of\noptical fiber tapers, with laser differential efficiency as high as xi~16% and\nout-coupling efficiency in excess of 28%.",
    "arxiv_id": "physics/0511153",
    "authors": [
      "Kartik Srinivasan",
      "Matthew Borselli",
      "Andreas Stintz",
      "Sanjay Krishna",
      "Oskar Painter"
    ],
    "categories": [
      "physics.optics",
      "quant-ph"
    ],
    "doi": "10.1364/OE.14.001094",
    "journal_ref": "Optics Express, Vol. 14, No. 3, pp. 1094-1105, Feb. 6, 2006\n  (http://www.opticsexpress.org/abstract.cfm?id=87777)",
    "title": "Cavity Q, mode volume, and lasing threshold in small diameter AlGaAs   microdisks with embedded quantum dots",
    "url": "https://arxiv.org/abs/physics/0511153"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ae37473f-d451-44d3-a27c-d070d7897795",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}