Laser Surface Engineering

The utilization of ultrafast laser radiation has come a long way from fundamental research with early lab-filling Ti:Sapphire systems to industrial mass production with modern turn-key regenerative amplifier or MOPA systems applying several ten Watts of average power. From cutting of hardened glass for mobile devices, to structuring of solar cells up to drilling of injection nozzles, ultrafast lasers have conquered a large field of applications in prominent industrial branches. Although or even because the success of ultrafast lasers can no longer be denied, research with respect to process understanding and efficiency is hence more important to increase productivity, reduce rejects and finally increase competitiveness.

The group »Laser Surface Engineering« addresses in particular these fields of applied research in closed cooperation with industrial partners like MedTech and life sciences, watchmaking and jewelry, as well as mechanical and electrical engineering.

Within the recent years the members of »Laser Surface Engineering« made their marks on publications on micro machining with ultrashort pulsed laser radiation and developed models to describe the ablation process. These models allow calculating the parameters to maximize process efficiency.

The lab situated in a temperate-controlled clean room is equipped with state-of-the-art pico- and femtosecond laser systems and cutting-edge beam deflection and positioning systems.

In close cooperation with the sister institute I3S the institute ALPS developed a method and equipment to fully synchronize a galvanometric scanner with an ultrafast laser system in MOPA configuration. This setup is capable of moving a 30 micron beam with a scan speed of 24 meters per second over the workpiece while firing laser pulses at 4 Megahertz with an accuracy of 2 microns and switching every single pulse on or off.