Random Cellular Scanning Method for Ablative Laser Micro Machining

Abstract. The article indicates the impact of the laser beam trajectory on the effect of interaction on material during the laser milling process, which is not often mentioned in scientific reports. The article presents the results of an experiment consisting in random cellular scanning method. For this purpose, an original system of random surface scanning was developed and tested. The processed area was divided into finite unit cells, which were once, randomly processed with a laser beam. The procedure was repeated for subsequent scanning processes. The article focuses on determining and comparing Ra and Sa roughness parameter values for random cellular scanning strategy during changes of number of processed layers. The micromachining process was performed using a laser device with UV picosecond pulses.