A laser welding method for producing a weld seam on a surface of a material arrangement (1) is provided. The weld seam to be produced has a main extension direction (20) on the surface. At least one fiber laser (8) is used. In order to generate a weld seam, the laser beam (6) generated by the fiber laser (8) is driven by a mechanical moving facility (12) to move along the main extension direction(20) of the weld seam to be produced in the surface of the material arrangement (1). The laser beam (6) is focused or parallelized on the surface of the material arrangement (1) by using an optical element (11). It is characterized in that the laser beam (6) moves on the surface of the material arrangement (1) in another direction (3) other than the main extension direction (20).