The study of the radiation patterns of laser-generated longitudinal ultrasound in semitransparent solid is presented.The experimental results are in good agreement with the theory based on the effect of optical penetr...The study of the radiation patterns of laser-generated longitudinal ultrasound in semitransparent solid is presented.The experimental results are in good agreement with the theory based on the effect of optical penetration within the sample.展开更多
The frequency spectrum of lascr-cxciicd ultrasonic wave has been measured in various metals including aluminum,sied and copper,at both fm and modified surfaces.The result shows that tke material and surface modificati...The frequency spectrum of lascr-cxciicd ultrasonic wave has been measured in various metals including aluminum,sied and copper,at both fm and modified surfaces.The result shows that tke material and surface modification affect the spectrum.展开更多
基金Supported by the National Natural Science Foundation of China.
文摘The study of the radiation patterns of laser-generated longitudinal ultrasound in semitransparent solid is presented.The experimental results are in good agreement with the theory based on the effect of optical penetration within the sample.
文摘The frequency spectrum of lascr-cxciicd ultrasonic wave has been measured in various metals including aluminum,sied and copper,at both fm and modified surfaces.The result shows that tke material and surface modification affect the spectrum.