美国纽约州的General Eleetric公司的P·W·Lorraine等人发明—用激光超声检验物体表面的方法和系统。该系统由激光光源、探测器和成像系统组成。用激光光源发射的光束扫描物体表面、发射的激光束产生超声波,用激光器扫描物体表面,在每一个扫描位置的一个探测带有一个探测器的表面超声波被反射,用调焦合成孔径技术对每个扫描位置激光超声波形数据组进行处理, P. Lorraine, et al., Of General Eleetric Company, New York, USA, invented a method and system for testing the surface of an object by laser light. The system consists of a laser light source, detector and imaging system. The surface of the object is scanned with a beam of light emitted by a laser source, the emitted laser beam generates an ultrasonic wave, the surface of the object is scanned with a laser, a surface ultrasonic wave with a detector is detected at each scanning position, A scan position laser ultrasonic waveform data set for processing,