Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p198
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 572491–575207

projected by the wavefront sensor optics.
6. A. 005. "Lasers", other than those specified by 0B001.g.5. or 0B001.h.6., components and optical equipment, as follows:
N.B.: SEE ALSO 6A205.
Note 1: Pulsed "lasers" include those that run in a continuous wave (CW) mode with pulses superimposed.
Note 2: Excimer, semiconductor, chemical, CO, CO2, and 'non‑repetitive pulsed' Nd:glass "lasers" are only specified by 6A005.d.
            Technical Note:
            For the purposes of 6A005. Note 2., 'non-repetitive pulsed' refers to "lasers" that produce either a single output pulse or that have a time interval between pulses exceeding one minute.
Note 3: 6A005 includes fibre "lasers".
Note 4: The control status of "lasers" incorporating frequency conversion (i.e., wavelength change) by means other than one "laser" pumping another "laser" is determined by applying the control parameters for both the output of the source "laser" and the frequency‑converted optical output.
Note 5: 6A005 does not apply to "lasers" as follows:
a. Ruby with output energy below 20 J;
b. Nitrogen;
c. Krypton.
Note 6: For the purposes of 6A005.a. and 6A005.b., 'single transverse mode' refers to "lasers" with a beam profile having an M2‑factor of less than 1.3, while 'multiple transverse mode' refers to "lasers" with a beam profile having an M2‑factor of 1.3 or higher.
6. A. 005. a. Non‑"tunable" continuous wave "(CW) lasers" having any of the following:
1. Output wavelength less than 150 nm and output power exceeding 1 W;
2. Output wavelength of 150 nm or more but not exceeding 510 nm and output power exceeding 30 W;
Note: 6A005.a.2. does not apply to Argon "lasers" having an output power equal to or less than 50 W.
3. Output wavelength exceeding 510 nm but not exceeding 540 nm and any of the following:
a. 'Single transverse mode' output and output power exceeding 50 W; or
b. 'Multiple transverse mode' output and output power exceeding 150 W;
6. A. 005. a. 4. Output wavelength exceeding 540 nm but not exceeding 800 nm and output power exceeding 30 W;
5. Output wavelength exceeding 800 nm but not exceeding 975 nm and any of the following:
a. 'Single transverse mode' output and output power exceeding 50 W; or
b. 'Multiple transverse mode' output and output power exceeding 80 W;
6. A. 005. a. 6. Output wavelength exceeding 975 nm but not exceeding 1,150 nm and any of the following:
a. 'Single transverse mode' output and any of the following:
1. Output power exceeding 1,000 W; or
2. Having all of the following:
a. Output power exceeding 500 W; and
b. Spectral bandwidth less than 40 GHz; or
b. 'Multiple transverse mode' output and any of the following:
6. A. 005. a. 6. b. 1. 'Wall‑plug efficiency' exceeding