Fig. 1. Laser power density distribution

Fig. 2. Laser irradiation target position

Fig. 3. Meshing

Fig. 4. Temperature changes of 2 mm thick stainless steel under different laser power irradiation

Fig. 5. Relationship between irradiation time and theoretical breakdown damage threshold at different thicknesses

Fig. 6. Thermal stress of stainless steel under different incident laser powers

Fig. 7. Schematic diagram of irradiation experimental device

Fig. 8. Breakdown time of 2 mm thick stainless steel at different powers

Fig. 9. Breakdown time of 1 mm thick stainless steel at different powers

Fig. 10. Breakdown time of 0.5 mm thick stainless steel at different powers

Fig. 11. 2 mm thick stainless steel bracket edge cracks

Fig. 12. Relationship between irradiation time and experimental breakdown damage threshold at different thicknesses