{
  "alternatives": [],
  "meta": {
    "api_version": "v1",
    "attribution": "lithium-niobate.com data compiled by Wentao Jiang; cite the original sources listed per value.",
    "data_version": "0.1.0",
    "documentation": "https://lithium-niobate.com/api/openapi.json",
    "license": {
      "id": "CC-BY-4.0",
      "name": "Creative Commons Attribution 4.0 International",
      "url": "https://creativecommons.org/licenses/by/4.0/"
    },
    "property": "mgo-photorefractive-threshold",
    "variant": "mgo5-cln"
  },
  "recommended": [
    {
      "category": "photorefractive",
      "default": true,
      "id": "mgo-photorefractive-threshold/mgo5-cln/bryan1984",
      "kind": "scalar",
      "name": "MgO concentration threshold for optical-damage resistance",
      "notes": "Abstract: about 100x photoconductivity increase; activation energy 0.1 eV (resistant) vs 0.5 eV.",
      "property": "mgo-photorefractive-threshold",
      "provenance": {
        "locator": "abstract",
        "source_id": "bryan1984",
        "status": "P(abs)",
        "transcribed": "2026-10-25"
      },
      "public": true,
      "unit": {
        "display": "at.% MgO",
        "ucum": "%"
      },
      "value_text": ">= 4.5 at.% MgO",
      "variant": "mgo5-cln"
    }
  ],
  "recommended_note": null,
  "spread": null
}