Get 28-2022 National Primary Standard for the Unit Of Average Laser Power

The paper describes the metrological assurance of uniformity in measuring the parameters of high-intensity laser radiation for technological and special equipment. A laser power stabilization system with an output power of 2–1·10⁴ W has been developed and studied. The presented stabilization system reduces the error in transferring the unit of average laser power when using an industrial laser having unstable output power as part of a measurement standard. GET 28-2022 National Primary Standard for the unit of average laser power was approved; this standard includes a power-stabilized laser, as well as a standard thermoelectric measuring transducer and a measuring beam splitter. The authors studied the means of transferring the unit of average laser power from the range of 1·10^–9–2 W to the range of 2–1·10⁴ W, as well as a system for reproducing and transferring the average power unit within the range of 2–1·10⁴ W. With the use of the developed industrial laser stabilization system, the laser power of the standard increased from 2 to 1·10⁴ W. Within the laser power range provided by GET 28-2022, the total standard uncertainty in reproducing and transferring the unit of average laser power does not exceed 0.636%. GET 28-2022 can be used to provide metrological support for laser systems designed for various applications operating within the laser power range of 2–1·10⁴ W, specifically systems intended for laser hardening, cutting, welding, etc.