The PRIMES HighPower-MicroSpotMonitor-Industry (HP-MSM-I) expands the family of camera-based beam diagnostics systems with a reference system for monitoring beams during production with an integrated self-testing function.

The HP-MSM-I measures and characterizes the focused beam of brilliant multi-kilowatt fiber lasers in process conditions, records the beam distribution from the fiber and monitors the emitted laser power.

Along with the beam power, the spatial focal position and the focal geometry in the form of diameter, divergence and Rayleigh length are also monitored, as well as the derived parameters such as beam parameter product and M2.

The combination of the proven PRIMES measurement techniques in a dust-proof housing suited to industrial use in combination with one of the fieldbus interfaces makes the HP-MSM-I an ideal tool for measurement in automated manufacturing.

The measurement optics and the beam attenuators from the HP-MSM and the familiar camera-based measurement principle are put to use here. Protected by the integrated protective glass changer, the gas flush for the beam entry and the mechanical closing device, a high reproducibility of the measurements is guaranteed. A second fiber from the laser, connected to the fiber adapter, enables the monitoring of the internal optics as well as those that contribute to focusing.

The recording of the laser power occurs according to the calorimetric principle and can be verified at any time by the integrated electrical reference. Following each measurement, all beam parameters measured are compared with the predefined thresholds of the process window and the evaluation is reported back to the system.

An adjustment of the parameters, such as laser power, for example, can therefore be carried out automatically. Data comparison over a longer period can also furnish an indication of maintenance work that may be needed on the laser or the optical components of the system. Documentation of the measurement results thus helps in planning work more effectively and reducing costs.