6E003 Category 6E

Other “technology” as follows (see List of Items Controlled).

Category 6: Sensors and Lasers

Reasons for control

• NS: National security
• AT: Anti-terrorism

Country chart

List-based license exceptions

Items

1. a. [Reserved]
2. b. [Reserved]
3. c. [Reserved]
4. d. “Technology” as follows:
5. d.1. “Technology” “required” for the coating and treatment of optical surfaces to achieve an 'optical thickness' uniformity of 99.5% or better for optical coatings 500 mm or more in diameter or major axis length and with a total loss (absorption and scatter) of less than 5 × 10−3;
6. d.2. “Technology” for the fabrication of optics using single point diamond turning techniques to produce surface finish “accuracies” of better than 10 nm rms on non-planar surfaces exceeding 0.5 m 2;
7. e. “Technology” “required” for the “development,” “production” or “use” of “specially designed” diagnostic instruments or targets in test facilities for “SHPL” testing or testing or evaluation of materials irradiated by “SHPL” beams;
8. f. [Reserved]
9. g. [Reserved]
10. h. [Reserved]

Related controls

See also 6E993.

Notes

N.B.: See also 2E003.f.

Technical Note: For the purposes of 6E003.d.1, 'optical thickness' is the mathematical product of the index of refraction and the physical thickness of the coating.

Source: eCFR, version 2026-08-01, retrieved 2026-08-20T04:04:59+00:00.