A BEAM MONITORING SYSTEM FOR LARGE AND SCANNED LASER SPOTS - LASMON

摘要

A novel monitoring system for large, formed andrnscanned high power laser beams will be presented.rnSuch laser beams are particular used in industrial laserrnhardening processes. The system design is very simple,rninexpensive and easily adaptable. The software makesrnit possible to identify all standard beam parameters e.g.rnthe beam parameter product, power densityrndistribution, Rayleigh length and FWHM. In addition,rnfunctions specifically for laser beam hardening arernprovided. Some significant applications are in the arearnof quality and process control, such as therndetermination of the distribution of the laser beamrnintensity after passing high frequency scanningrnsystems. Beyond that, the system is the key forrnmonitoring the necessary input data of the heatrntreatment simulation process. The state of developmentrnof a real 3D laser hardening simulation tool is alsornpresented. As a result the theoretical and experimentalrninfluence of different laser beam shapes to thernhardening parameters is discussed.