METHOD AND ARRANGEMENT FOR GENERATING A LASER BEAM HAVING A DIFFERING BEAM PROFILE CHARACTERISTIC BY MEANS OF A MULTI-CLAD FIBRE

摘要

The invention relates to a method for generating a laser beam (3) having a differing beam profile characteristic, wherein a laser beam (2) is coupled into one end (1a) of a multi-clad fibre (1), in particular a double-clad fibre, and is coupled out of the other end (1b) of the multi-clad fibre (1) and wherein for generating differing beam profile characteristics of the coupled-out laser beam (3) the incident laser beam (2) is selectively coupled either at least into the inner fibre core (4) of the multi-clad fibre (1) or at least into at least one outer annular core (6) of the multi-clad fibre (1). The invention further relates to a corresponding arrangement (10).