Title: NIST Develops High-Precision Laser Power Measurement System Using Radiation Pressure
Summary:
The National Institute of Standards and Technology (NIST) has developed a new high-precision laser power measurement system that uses radiation pressure to accurately measure kilowatt-class continuous wave (CW) lasers. The system, called High Amplification Laser-pressure Optic (HALO), measures laser power by detecting the force imparted on a mirror when the laser beam reflects off it, rather than measuring the heat transferred into a cryogenic radiometer.
Key points:
– NIST’s new system can measure laser power with high accuracy at kilowatt levels
– It uses radiation pressure detection, measuring the force from laser beam reflections rather than heat transfer
– The system uses multiple reflections of the laser beam on a sensing mirror to amplify the force measurement
– NIST is testing the system’s performance and identifying and minimizing noise sources
– The system has the potential to enable more precise measurements of high-power lasers used in various applications
Source: https://www.nist.gov/programs-projects/high-amplification-laser-pressure-optic-halo
Keywords: precision, uncertainty, radiation pressure, laser power, metrology
