Fig. 1. Schematic diagram of basic structure of laser shock processing

Fig. 2. Pulse-width dependence of damage threshold of a gold grating and a gold mirror ^[30]

Fig. 3. Dependence of reflectivity of titanium on wavelength^[44]

Fig. 4. Dependence of optical properties of aluminum on wavelength^[47]. (a) Extinction coefficient k_M; (b) skin depth δ

Fig. 5. Dependences of ratio of plasma thermal energy to laser energy α′on power density and pulse width^[16]

Fig. 6. Effect of wavelength on the curve of maximum pressure and power density (pulse width is 25‒30 ns) ^[23]

Fig. 7. Absorbed energy from only first-pulse, only second-pulse, and total-pulses in 100 mJ+100 mJ laser double-pulse^[73]

Fig. 8. Maximum pressure of the shock waves caused by combined double-pulse changes with time delay^[75]