[14p-D311-1~8] 1.6 Ultrasonics

[14p-D311-1] Ultrasonic measurement by self-mixing interferometry using micro-chip laser

〇Takeshi Hoshi¹, Azusa Sugawara¹, Setsu Yamamoto¹, Taisuke Kawasaki^2,3, Takunori Taira^2,3 (1.Toshiba ESS, 2.Institute for Molecular Science, 3.RIKEN)

Keywords:laser, ultrasonic, self-mixing interferometry

Photoacoustic imaging is attracting attention as remote and non-destructive inspection technique for a wide variety of subjects such as inspection of concrete infrastructures, welded structures, furthermore, medical applications, and so on. We considered down-sizing, lower-pricing laser ultrasonic inspection system with simple configuration in order to extend industrial applications. Ultrasonic measurement by self-mixing interferometry using micro-chip laser was conducted to apply to welding inspection. Ultrasonic measurement performance evaluated in our experiments will be reported.