{
  "annotation_id": "e4203252-a3a2-4313-87aa-025d02516417",
  "date_created": "2026-03-02T18:00:36.431000Z",
  "date_modified": "2026-03-02T18:00:36.431000Z",
  "file_hash": "08c96e443adbabcef03cbfebea6769699f179fab7002d0a561948afd3ecab260",
  "private": false,
  "record": {
    "abstract": "We report measurements of thermal self-locking of a Fabry-Perot cavity\ncontaining a potassium niobate (KNbO3) crystal. We develop a method to\ndetermine linear and nonlinear optical absorption coefficients in intracavity\ncrystals by detailed analysis of the transmission lineshapes. These lineshapes\nare typical of optical bistability in thermally loaded cavities. For our\ncrystal, we determine the one-photon absorption coefficient at 846 nm to be\n(0.0034 \\pm 0.0022) per m and the two-photon absorption coefficient at 846 nm\nto be (3.2 \\pm 0.5) \\times 10^{-11} m/W and the one-photon absorption\ncoefficient at 423 nm to be (13 \\pm 2) per m. We also address the issue of\nblue-light-induced-infrared-absorption (BLIIRA), and determine a coefficient\nfor this excited state absorption process. Our method is particularly well\nsuited to bulk absorption measurements where absorption is small compared to\nscattering. We also report new measurements of the temperature dependence of\nthe index of refraction at 846 nm, and compare to values in the literature.",
    "arxiv_id": "physics/0102032",
    "authors": [
      "A. D. Ludlow",
      "H. M. Nelson",
      "S. D. Bergeson"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/JOSAB.18.001813",
    "title": "Two-photon absorption in potassium niobate",
    "url": "https://arxiv.org/abs/physics/0102032"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "775f137c-d39b-4cbc-ae5d-c1ee6d85e218",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}