{
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    "about": {
      "@type": "ChemicalSubstance",
      "chemicalComposition": "LiNbO3",
      "name": "lithium niobate"
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    "citation": [
      "https://doi.org/10.1063/1.1988987"
    ],
    "creator": {
      "@type": "Person",
      "name": "Wentao Jiang"
    },
    "description": "Thermo-optic coefficient, ordinary of lithium niobate (LiNbO3): 4 provenance-tagged value(s) from 2 source(s) for variant(s) cln. Each value carries conditions, uncertainty, the source locator and a status code (P primary, P-comp compilation, P-db database, S secondary, V vendor, C computed).",
    "distribution": [
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        "@type": "DataDownload",
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        "encodingFormat": "text/csv"
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    "identifier": "https://lithium-niobate.com/api/v1/properties/dno-dt.json",
    "isAccessibleForFree": true,
    "keywords": [
      "lithium niobate",
      "LiNbO3",
      "Thermo-optic coefficient, ordinary"
    ],
    "license": "https://creativecommons.org/licenses/by/4.0/",
    "name": "LiNbO3 Thermo-optic coefficient, ordinary",
    "url": "https://lithium-niobate.com/api/v1/properties/dno-dt.json",
    "variableMeasured": [
      {
        "@type": "PropertyValue",
        "name": "Thermo-optic coefficient, ordinary",
        "unitText": "/K"
      }
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    "version": "0.1.0"
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  "meta": {
    "api_version": "v1",
    "attribution": "lithium-niobate.com data compiled by Wentao Jiang; cite the original sources listed per value.",
    "count": 4,
    "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": "dno-dt"
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  "records": [
    {
      "category": "optical",
      "conditions": {
        "temperature_C": 25,
        "wavelength_nm": 1064
      },
      "id": "dno-dt/cln/cti1999-1064nm",
      "kind": "scalar",
      "name": "Thermo-optic coefficient, ordinary",
      "property": "dno-dt",
      "provenance": {
        "derivation": "derivative of the cti1999 vendor Sellmeier (status V) at 25 C",
        "source_id": "cti1999",
        "status": "C",
        "transcribed": "2026-10-25"
      },
      "public": true,
      "symbol": "dn_o/dT",
      "unit": {
        "display": "1/K",
        "qudt": "http://qudt.org/vocab/unit/PER-K",
        "ucum": "/K"
      },
      "value": 5.4e-06,
      "variant": "cln"
    },
    {
      "category": "optical",
      "conditions": {
        "temperature_C": 25,
        "wavelength_nm": 1550
      },
      "id": "dno-dt/cln/cti1999-1550nm",
      "kind": "scalar",
      "name": "Thermo-optic coefficient, ordinary",
      "property": "dno-dt",
      "provenance": {
        "derivation": "derivative of the cti1999 vendor Sellmeier (status V) at 25 C",
        "source_id": "cti1999",
        "status": "C",
        "transcribed": "2026-10-25"
      },
      "public": true,
      "symbol": "dn_o/dT",
      "unit": {
        "display": "1/K",
        "qudt": "http://qudt.org/vocab/unit/PER-K",
        "ucum": "/K"
      },
      "value": 4.1e-06,
      "variant": "cln"
    },
    {
      "category": "optical",
      "conditions": {
        "temperature_C": 25,
        "wavelength_nm": 633
      },
      "id": "dno-dt/cln/cti1999-633nm",
      "kind": "scalar",
      "name": "Thermo-optic coefficient, ordinary",
      "property": "dno-dt",
      "provenance": {
        "derivation": "derivative of the cti1999 vendor Sellmeier (status V) at 25 C",
        "source_id": "cti1999",
        "status": "C",
        "transcribed": "2026-10-25"
      },
      "public": true,
      "symbol": "dn_o/dT",
      "unit": {
        "display": "1/K",
        "qudt": "http://qudt.org/vocab/unit/PER-K",
        "ucum": "/K"
      },
      "value": 9.4e-06,
      "variant": "cln"
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    {
      "category": "optical",
      "conditions": {
        "temperature_text": "300 K",
        "wavelength_nm": 632
      },
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      "kind": "scalar",
      "name": "Thermo-optic coefficient, ordinary",
      "notes": "2.5x below the value derived from the cti1999 Sellmeier.",
      "property": "dno-dt",
      "provenance": {
        "derivation": "dn_o/dT = (-1.7 + 6.9e-3 T) x 1.0e-5 per K evaluated at T = 300 K (T in K inferred); formula status S",
        "locator": "schwesyg2011 Eqs. (2.26)-(2.27)",
        "source_id": "moretti2005",
        "status": "C",
        "transcribed": "2026-10-25",
        "via": "schwesyg2011"
      },
      "public": true,
      "symbol": "dn_o/dT",
      "unit": {
        "display": "1/K",
        "qudt": "http://qudt.org/vocab/unit/PER-K",
        "ucum": "/K"
      },
      "value": 3.7e-06,
      "variant": "cln"
    }
  ]
}