High Precision Surface Structuring with Ultra-Short Laser Pulses and Synchronized Mechanical Axes

Burst mode with ps- and fs-pulses: Influence on the removal rate, surface quality, and heat accumulation

“…High surface speeds are e.g. offered by fast rotating cylinders which can either be combined with additional acousto-optic deflectors 7 or be completely synchronized with the laser system 8,9 . A more flexible approach are polygon line scanners offering marking speeds of 100 m/s and higher as well as the possibility of a synchronization with the laser system 10 .…”

Patterning of Aluminium thin film on polyethylene terephthalate by multi-beam picosecond laser

“…However, the use of very high repetition rate, (MHz), high power, low pulse energy laser systems requiring fast, accurate scanners and tight synchronisation can improve this situation greatly [12]. In the present work, single beam patterning with a low NA lens requires a few mJ's to evaporate the Aluminium film whose thickness is only a few times the optical penetration depth ( l opt $ 7 nm at λ¼532 nm).…”

On-The-Fly Laser Machining: A Case Study for In Situ Balancing of Rotative Parts

“…Some lasers overcome this issue by using a method called 'sky-writing', where the laser beam scanning speed is accelerated to a constant target velocity before the marking process starts [3]; this however, reduces the operational time and limits the range of motion of the laser beam. Neverthless, on-the-fly laser machining, offers the ability to ablate a rotating component by synchronizing the rotor with the laser system.…”

“…Neverthless, on-the-fly laser machining, offers the ability to ablate a rotating component by synchronizing the rotor with the laser system. Jaeggi [3] developed such a method for 2.5D processing of rotatives, a practice often used for surface and structuring applications. It achieved a pulse positioning precision of 1 µm with the target component rotating at 510 RPM; however, the research lacks a detailed analysis on the errors in different features and how this would affect the use of such system in other applications like in-situ balancing.…”