描述了光声显微术中的一种新技术,该技术可使行扫描光声图象直接显示在示波器屏幕上并能观察到图象的实时变化.新方法与普通光声显微术的不同在于被调制的是光束位置而不是光束强度,所以试样缺陷的空间分布则映入了时域.结果,获得的光声行扫描图象与普通方法十分相似,但图象是在几ms的测量时间内而不是几min内获得的. Describes a new technique in photoacoustic microscopy that enables line-scan photoacoustic imaging to be displayed directly on the oscilloscope screen and to observe the real-time changes in the image.The new method is comparable to that of conventional photoacoustic microscopy The difference is that the beam position is modulated rather than the beam intensity, so the spatial distribution of the sample defect is mapped into the time domain. As a result, the acquired photoacoustic line scan image is very similar to the normal method but the image is in a few ms Of the measurement time rather than within a few minutes.