Fig. 1. Comparison of long-pulse laser and ultra-fast pulse laser processing materials^[7]

Fig. 2. Schematic diagram of surface periodic structure formed in the SOM mechanism^[9]

Fig. 3. Multiphysics process of CO₂ laser processing of fused silica optics^[12]

Fig. 4. Influence of different polishing methods on surface roughness of materials^[16]

Fig. 5. Polishing results at different laser scanning speeds^[17]. (a) Not polished; (b) 90 mm/s; (c) 45 mm/s; (d) 20 mm/s

Fig. 6. Effect comparison before and after laser polishing ^[30]

Fig. 7. Scanning electron microscope images of the CVD-diamond surfaces ^[37]