Determination of the properties of a high power laser beam whereby a part of the main beam is split off immediately after the beam has been focussed and collimated so that its properties match those of the originating beam

摘要

The beam (26) collimation device (42) are arranged after the beam focus (32) in the beam direction, so that the beam splitter (12) splits off a part of the collimated beam (10). AN Independent claim is made for method for analysis of a focussed laser beam.