{
  "url": "https://openlegislation.uk/eu-regulation-2020-1749/annex-I/division-8/division-3",
  "json_url": "https://openlegislation.uk/eu-regulation-2020-1749/annex-I/division-8/division-3.json",
  "legislation": "eur/2020/1749",
  "legislation_title": "Commission Delegated Regulation (EU) 2020/1749 of 7 October 2020 amending Council Regulation (EC) No 428/2009 setting up a Community regime for the control of exports, transfer, brokering and transit of dual-use items",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2020-1749",
  "path": "annex/I/division/8/division/3",
  "kind": "division",
  "number": null,
  "heading": "Materials",
  "text": "6C002Optical sensor materials as follows:\na.. Elemental tellurium (Te) of purity levels of 99,9995 % or more;\nb.. Single crystals (including epitaxial wafers) of any of the following:\n1.. Cadmium zinc telluride (CdZnTe), with zinc content of less than 6 % by ‘mole fraction’;\n2.. Cadmium telluride (CdTe) of any purity level; or\n3.. Mercury cadmium telluride (HgCdTe) of any purity level.\nTechnical Note:\n‘Mole fraction’ is defined as the ratio of moles of ZnTe to the sum of moles of CdTe and ZnTe present in the crystal.\n6C004Optical materials as follows:\na.. Zinc selenide (ZnSe) and zinc sulphide (ZnS) \"substrate blanks\", produced by the chemical vapour deposition process and having any of the following:\n1.. A volume greater than 100 cm3; or\n2.. A diameter greater than 80 mm and a thickness of 20 mm or more;\nb.. Electro-optic materials and non-linear optical materials, as follows:\n1.. Potassium titanyl arsenate (KTA) (CAS 59400-80-5);\n2.. Silver gallium selenide (AgGaSe2, also known as AGSE) (CAS 12002-67-4);\n3.. Thallium arsenic selenide (Tl3AsSe3, also known as TAS) (CAS 16142-89-5);\n4.. Zinc germanium phosphide (ZnGeP2, also known as ZGP, zinc germanium biphosphide or zinc germanium diphosphide); or\n5.. Gallium selenide (GaSe) (CAS 12024-11-2);\nc.. Non-linear optical materials, other than those specified in 6C004.b., having any of the following:\n1.. Having all of the following:\na.. Dynamic (also known as non-stationary) third order non-linear susceptibility (χ(3), chi 3) of 10–6 m2/V2 or more; and\nb.. Response time of less than 1 ms; or\n2.. Second order non-linear susceptibility (χ(2), chi 2) of 3,3×10–11 m/V or more;\nd.. \"Substrate blanks\" of silicon carbide or beryllium beryllium (Be/Be) deposited materials, exceeding 300 mm in diameter or major axis length;\ne.. Glass, including fused silica, phosphate glass, fluorophosphate glass, zirconium fluoride (ZrF4) (CAS 7783-64-4) and hafnium fluoride (HfF4) (CAS 13709-52-9) and having all of the following:\n1.. A hydroxyl ion (OH-) concentration of less than 5 ppm;\n2.. Integrated metallic purity levels of less than 1 ppm; and\n3.. High homogeneity (index of refraction variance) less than 5 × 10–6;\nf.. Synthetically produced diamond material with an absorption of less than 10–5 cm–1 for wavelengths exceeding 200 nm but not exceeding 14 000 nm.\n6C005\"Laser\" materials as follows:\na.. Synthetic crystalline \"laser\" host material in unfinished form as follows:\n1.. Titanium doped sapphire;\n2.. Not used.\nb.. Rare-earth-metal doped double-clad fibres having any of the following:\n1.. Nominal \"laser\" wavelength of 975 nm to 1 150 nm and having all of the following:\na.. Average core diameter equal to or greater than 25 μm; and\nb.. Core ‘Numerical Aperture’ (‘NA’) less than 0,065; or\nNote:\n6C005.b.1. does not control double-clad fibres having an inner glass cladding diameter exceeding 150 μm and not exceeding 300 μm.\n2.. Nominal \"laser\" wavelength exceeding 1 530 nm and having all of the following:\na.. Average core diameter equal to or greater than 20 μm; and\nb.. Core ‘Numerical Aperture’ (‘NA’) less than 0,1.\nTechnical Notes:\n1.\nFor the purposes of 6C005.b., the core ‘Numerical Aperture’ (‘NA’) is measured at the emission wavelengths of the fibre.\n2.\n6C005.b. includes fibres assembled with end caps.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2020/1749/annex/I/division/8/division/3",
    "retrieved_at": "2026-11-01T14:42:20.831765+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}