{
  "annotation_id": "54744e84-c65e-4783-8da7-9712a0966ca0",
  "date_created": "2026-03-02T18:01:04.035000Z",
  "date_modified": "2026-03-02T18:01:04.035000Z",
  "file_hash": "e4d4575458e0c837817487479acb142d07180299644ef97a1bd82c91fdb880c0",
  "private": false,
  "record": {
    "abstract": "We demonstrate a novel compact solid-state laser source for high-resolution\ntwo-photon spectroscopy of the $1S-2S$ transition in atomic hydrogen. The\nsource emits up to 20 mW at 243 nm and consists of a 972 nm diode laser, a\ntapered amplifier, and two doubling stages. The diode laser is actively\nstabilized to a high-finesse cavity. We compare the new source to the stable\n486 nm dye laser used in previous experiments and record 1S-2S spectra using\nboth systems. With the solid-state laser system we demonstrate a resolution of\nthe hydrogen spectrometer of 6 \\times 10^{11} which is promising for a number\nof high-precision measurements in hydrogen-like systems.",
    "arxiv_id": "physics/0511162",
    "authors": [
      "N. Kolachevsky",
      "J. Alnis",
      "S. D. Bergeson",
      "T. W. Haensch"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevA.73.021801",
    "title": "Compact solid-state laser source for 1S-2S spectroscopy in atomic   hydrogen",
    "url": "https://arxiv.org/abs/physics/0511162"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d45c9354-1650-45e6-bdf9-995ff3c96348",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}