Fast oscillation of the laser beam is an established and proven method for beam shaping to improve laser material processing in terms of machining quality, process stability, and time. In the first part, an overview will be given for available and already proven oscillation devices as

well as equipment under development. Solutions for beam oscillations in x and y direction as well as solutions for oscillations of the focal plane along the beam propagation direction (z direction) are introduced. Advantages and disadvantages of the various concepts are considered and

evaluated.

In the second part, examples will be provided to demonstrate the profitable use of fast laser beam oscillations for the applications of cutting, welding, hardening, and cladding. Finally, opportunities of 3D beam shaping provided by oscillating the beam focus in three spatial directions

simultaneously or opportunities utilizing x/y oscillations of the laser focal point like a jigsaw are discussed. Consideration is given to whether beam oscillations have the potential to eliminate the need for ever higher laser powers or different wavelength.