The progress of laser ultrasonics has been discussed especially for the laser - generated surface acoustic wave . the transform process of energy from light to ultrasonic has been analyzed . the generation mechanism of laser - generated surface acoustic wave has been discussed in detail excluding thermo - elastic mode and illumination mode 介绍了激光超声领域的研究进展，分析了光致超声过程中，能量从光能到声能的转换，归纳了用激光激发声表面波的机理，讨论了两种主要的模型：热弹模型和融蚀模型。
