High throughput laser surface micro-structuring of polystyrene by combining direct laser interference patterning with polygon scanner technology

Laser-based processing techniques have proven to be an effective option of modifying polymer surfaces. In this context Direct Laser Interference Patterning in conjunction with the polygon scanner technique is used fabricate textured polystyrene surfaces through ultra-fast beam deflection. This achieved by using a high-average power picosecond laser combination mirror-based scanning system. The two-beam DLIP optical configuration leads formation line-like structures spatial period 21.0 µm. influence speed and repetition rate on structure investigated, allowing heights up 23 micro-structure was found result from swelling ablation mechanisms. By applying speeds 350 m/s, throughput 1.1 m2/min reported for first time method.