Fig. 1. Schematic of scanning path

Fig. 2. Influence of peak power density on ablation depth

Fig. 3. Ablation morphologies of CFRP surface under different peak power densities. (a) 6.35×10⁶ W/cm^2; (b) 1.27×10⁷ W/cm^2; (c) 1.06×10⁸ W/cm^2;　(d) microscopic morphology of groove in Fig. 3 (c)

Fig. 4. Influence of scanning angle on ablation depth

Fig. 5. Surface topographies of CFRP. (a) 0° parallel scanning; (b) 90° vertical scanning

Fig. 6. Surface topographies of CFRP at low scanning speed. (a) 100 mm/s; (b) 400 mm/s

Fig. 7. Influences of scanning speed on ablation depth and MRR

Fig. 8. Schematic of surface material removal under thermo-mechanical ablation

Fig. 9. Influences of hatch distance on ablation depth and MRR at 0° and 90°scanning angles. (a) Ablation depth; (b) MRR

Fig. 10. Schematics of thermal diffusion after multiple pulses on scanning path. (a) 0° parallel scanning; (b) 90° vertical scanning

Fig. 11. Surface morphology of CFRP after multi-layer removal

Fig. 12. Surface profiles of AB and CD sections in Fig. 11. (a) AB; (b) CD

Fig. 13. Influence of defocusing distance on ablation depth during multi-layer removal