激光技术在高速摄影中的应用已有近二十年的历史了.激光在高速摄影中获得应用的原因,是激光可以作为时空可控的强光源和相干单色光源。激光的高亮度,可以使象面得到高照度,从而为高速摄影、特别是高速显微摄影,提供了一种好的光源。激光的高相干性,为获得干涉场的高速摄影创造了条件。同时,激光脉冲的结构,是可以控制的,这为高速摄影中的同步问题提供了不少方便.高速摄影的研究对象是高速变化(高速运 The application of laser technology in high-speed photography has been nearly two decades. The reason why laser is used in high-speed photography is that laser can be used as strong and spatially and temporally controllable monochromatic light source. The high brightness of the laser allows the image plane to be illuminated to provide a good source of light for high-speed photography, especially high-speed microscopy. The high coherence of the laser creates conditions for obtaining high-speed photography of the interference field. At the same time, the structure of the laser pulse can be controlled, which provides a lot of convenience for the synchronization problem in high-speed photography.The object of high-speed photography is high speed change