“…Some of the most remarkable current developments in this field involve pulse forming, which allows to improve the quality of welds by e.g. influencing the melt flow [1,2], shadow welding [3,4], which uses an elongated single pulse of high power to conduct a continuous seam weld over a length of several millimeters at very high travel speed, and the highly innovative laser droplet welding which uses individual molten droplets for microjoining of difficult-to-weld material combinations with minimal heat input [5,6]. Steel to steel.…”