Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p199
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 574980–577635

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 18% and output power exceeding 1,000 W; or
2. Output power exceeding 2 kW;
Note 1: 6A005.a.6.b. does not apply to 'multiple transverse mode', industrial "lasers" with output power exceeding 2 kW and not exceeding 6 kW with a total mass greater than 1,200 kg. For the purpose of this note, total mass includes all components required to operate the "laser", e.g., "laser", power supply, heat exchanger, but excludes external optics for beam conditioning or delivery.
Note 2: 6A005.a.6.b. does not apply to 'multiple transverse mode', industrial "lasers" having any of the following:
a. Not used since 2018;
b. Output power exceeding 1 kW but not exceeding 1.6 kW and having a BPP exceeding 1.25 mm•mrad;
c. Output power exceeding 1.6 kW but not exceeding 2.5 kW and having a BPP exceeding 1.7 mm•mrad;
d. Output power exceeding 2.5 kW but not exceeding 3.3 kW and having a BPP exceeding 2.5 mm•mrad;
e. Output power exceeding 3.3 kW but not exceeding 6 kW and having a BPP exceeding 3.5 mm•mrad;
f. Not used since 2018;
g. Not used since 2018;
h. Output power exceeding 6 kW but not exceeding 8 kW and having a BPP exceeding 12 mm•mrad; or
i. Output power exceeding 8 kW but not exceeding 10 kW and having a BPP exceeding 24 mm•mrad.
Technical Note:
For the purposes of 6A005., 'wall-plug efficiency' is defined as the ratio of "laser" output power (or "average output power") to total electrical input power required to operate the "laser", including the power supply/conditioning and thermal conditioning/heat exchanger.
6. A. 005. a. 7. Output wavelength exceeding 1,150 nm but not exceeding 1,555 nm and any of the following:
a. 'Single transverse mode' and output power exceeding 50 W; or
6. A. 005. a. 7. b. 'Multiple transverse mode' and output power exceeding 80 W;
8. Output wavelength exceeding 1,555 nm but not exceeding 1,850 nm, and output power exceeding 1 W;
9. Output wavelength exceeding 1,850 nm but not exceeding 2,100 nm, and any of the following:
                  a. 'Single transverse mode' and output power exceeding 1 W; or
                  b. 'Multiple transverse mode' output and output power exceeding 120 W; or
10. Output wavelength exceeding 2,100 nm and output power exceeding 1 W;
6. A. 005. b. Non‑"tunable" "pulsed lasers" having any of the following:
1. Output wavelength less than 150 nm and any of the following:
a. Output energy exceeding 50 mJ per pulse and "peak power" exceeding 1 W; or