METHOD AND DEVICE FOR ANALYSIS AND MONITORING OF THE LIGHT INTENSITY DISTRIBUTION OVER THE CROSS-SECTION OF A LASER BEAM

摘要

A method for the analysis and / or monitoring of the light intensity distribution over the cross section (9) of a laser beam (1), comprising the steps of:– Deflecting the laser beam (1) with a laser mirror (2) and– interferometric detection of local thermal expansions of the laser reflecting surface (2) because of the laser mirror (2) incident different light intensities.