Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p214
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 613535–616440

between 1000 and 1100 nm having either of the following:
1. Pulse‑excited and Q‑switched with a pulse duration equal to or more than 1 ns, and having either of the following:
a. A single–transverse mode output with an average output power greater than 40 W; or
b. A multiple‑transverse mode output having an average power greater than 50 W; or
2. Incorporating frequency doubling to give an output wavelength between 500 and 550 nm with an average output power of more than 40 W.
6. A. 205. g. Pulsed carbon monoxide lasers, other than those specified by 6A005.d.2., having all of the following characteristics:
1. Operating at wavelengths between 5000 and 6000 nm;
2. A repetition rate greater than 250 Hz;
3. An average output power greater than 200 W; and
4. Pulse width of less than 200 ns.

           N.B.: SEE ALSO 6A005.d.2.
6. A. 225. Velocity interferometers for measuring velocities exceeding 1 km/s during time intervals of less than 10 microseconds.
Note: 6A225 includes velocity interferometers such as VISARs (Velocity Interferometer Systems for Any Reflector), DLIs (Doppler Laser Interferometers) and PDV (Photonic Doppler Velocimeters) also known as Het‑V (Heterodyne Velocimeters).

6. A. 226. Pressure sensors, as follows:
a. Shock pressure gauges capable of measuring pressures greater than 10 GPa, including gauges made with manganin, ytterbium, and polyvinylidene fluoride (PVDF)/ polyvinyl difluoride (PVF2);
b. Quartz pressure transducers for pressures greater than 10 GPa.
6. B.  Test, Inspection and Production Equipment
6. B. 002. Masks and reticles, specially designed for optical sensors specified by 6A002.a.1.b. or 6A002.a.1.d.
6. B. 004. Optical equipment as follows:
a. Equipment for measuring absolute reflectance to an "accuracy" of equal to or better than 0.1% of the reflectance value;
b. Equipment other than optical surface scattering measurement equipment, having an unobscured aperture of more than 10 cm, specially designed for the non‑contact optical measurement of a non‑planar optical surface figure (profile) to an "accuracy" of 2 nm or less (better) against the required profile.
Note: 6B004 does not apply to microscopes.
6. B. 007. Equipment to produce, align and calibrate land‑based gravity meters with a static "accuracy" of less (better) than 0.1 mGal.
6. B. 008. Pulse radar cross‑section measurement systems having transmit pulse widths of 100 ns or less, and specially designed components therefor.
N.B.: SEE ALSO 6B108.
6. B. 108. Systems, other than those specified by 6B008, specially designed for radar cross section measurement usable for 'missiles' and their subsystems.
Technical Note:
In 6B108 'missile' means complete rocket systems and unmanned aerial vehicle systems capable of a range exceeding 300 km.
6. C.  Materials
6. C. 002. Optical sensor materials as follows:
a. Elemental tellurium (Te) of purity levels of 99.9995% or more;
b.