Optical generation of high amplitude laser generated surface acoustic waves

摘要: The phase velocity scanning (PVS) approach is explored for pulsed laser generation of finite amplitude surface acoustic wave longitudinal stresses in solids. involves the a focused line source with generated pulse, leading to linear buildup SAW distance. In principle, dynamic stress produced by can be controlled using PVS through distance, providing means access thermoelastic at levels up elastic limit. We investigate theoretical modeling coupled equation solid halfspace, and confirm experimental measurements.