[22p-1BN-1~9] Recent advances in Laser-induced modification processes

2:50 PM - 3:20 PM JST(5:50 AM - 6:20 AM UTC)

[22p-1BN-4] In-situ measurement of femtosecond laser-driven shock wave and its application to surface modification

〇Tomokazu Sano¹ (1.Osaka Univ.)

Keywords:

femtosecond laser,shock wave

Solid material changes directly to plasma, not via the liquid or gas state, due to ablation when the solid material is irradiated with a femtosecond laser pulse of more than 10¹⁴ W/cm². The shock wave is driven by the rapid expansion during the ablation and propagates through the solid. In-situ XFEL diffraction measurements during femtosecond laser ablation and dry laser peening as an application of the femtosecond laser shock compression will be explained in this presentation.