Ultrafast microscopy of shock waves induced by femtosecond laser

摘要

Femtosecond-laser-induced shock waves in aluminum film deposited on a-quartz were generated at a repetition of up to ten shocks per second. Using ultrafast time-resolved microscopy of shock waves in different thickness of aluminum films, the shock velocity propagated in aluminum was measured to be 9.0 ± 0.7 km/s. With shock wave equations of state, shock pressures in aluminum and a-quartz were calculated to be 66( ± 15) GPa and 56( ± 15) GPa respectively, and final temperatures in aluminum and α-quartz were calculated to be 281°C and 104°C respectively.