# Council Regulation (EC) No 428/2009 of 5 May 2009 setting up a Community regime for the control of exports, transfer, brokering and transit of dual-use items (Recast), Division [6C004]: Optical materials as follows:


a..Zinc selenide (ZnSe) and zinc sulphide (ZnS) "substrate blanks", produced by the chemical vapour deposition process and having any of the following:
1..A volume greater than 100 cm3; or
2..A diameter greater than 80 mm and a thickness of 20 mm or more;
b..Electro-optic materials and non-linear optical materials, as follows:
1..Potassium titanyl arsenate (KTA) (CAS 59400-80-5);
2..Silver gallium selenide (AgGaSe2, also known as AGSE) (CAS 12002-67-4);
3..Thallium arsenic selenide (Tl3AsSe3, also known as TAS) (CAS 16142-89-5);
4..Zinc germanium phosphide (ZnGeP2, also known as ZGP, zinc germanium biphosphide or zinc germanium diphosphide); ...
5..Gallium selenide (GaSe) (CAS 12024-11-2);
c..Non-linear optical materials, other than those specified in 6C004.b., having any of the following:
1..Having all of the following:
a..Dynamic (also known as non-stationary) third order non-linear susceptibility (χ(3), chi 3) of 10–6 m2/V2 or more; and
b..Response time of less than 1 ms; or
2..Second order non-linear susceptibility (χ(2), chi 2) of 3,3×10–11 m/V or more;
d.."Substrate blanks" of silicon carbide or beryllium beryllium (Be/Be) deposited materials, exceeding 300 mm in diameter or major axis length;
e..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:
1..A hydroxyl ion (OH-) concentration of less than 5 ppm;
2..Integrated metallic purity levels of less than 1 ppm; and
3..High homogeneity (index of refraction variance) less than 5 × 10–6;
f..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.

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Source: https://www.legislation.gov.uk/eur/2009/428/annex/I/division/8/division/3/division/6C004 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-428/annex-I/division-8/division-3/division-6C004
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.