[20p-B205-1~15] 3.6 Laser processing (formerly 3.7)

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[20p-B205-11] Diagnostics of the Femtosecond Laser Driven Shock Wave in Aluminum using Frequency Domain Interferometry

〇(M2)Seiru Inoue¹, Nobuhiko Nakanii², Tomokazu Sano¹ (1.Osaka Univ, 2.QST)

Keywords:

Femtosecond Laser,Laser Driven Shock Wave,Frequency Domain Interferometry

Dry laser peening using femtosecond laser-driven shock wave is a surface modification process that improves the fatigue properties of materials by inducing compressive residual stresses on the material surface. The dry laser peening effect depends on the properties of the femtosecond laser-driven shock wave, which has been investigated using various techniques. However, precise measurements with sufficient temporal resolution of the structure of the femtosecond laser-driven shock wave have never been investigated. The purpose of the present study is to construct a frequency-domain interferometry with high temporal resolution and to investigate the characteristics of the femtosecond laser-driven shock wave.