Johnson R H, Holshouser D F
Appl Opt. 1972 Aug 1;11(8):1708-15. doi: 10.1364/AO.11.001708.
A system that uses a mode-locked laser to record double exposure holograms of a rapidly changing object is described. A saturable absorber is used to mode-lock a ruby laser, producing a train of pulses of very short duration. Two of the pulses are selected by rapidly switching a Kerr cell shutter arrangement. When these two pulses are used to produce a hologram of a moving object, an interference pattern results from which information about the object motion can be extracted. Experimental results are presented that show the state of motion of a thin mirror. Some features of the motion, which would be difficult to detect using a system with less time resolution, are clearly visible in the hologram reconstructions.
描述了一种使用锁模激光器记录快速变化物体的双曝光全息图的系统。使用可饱和吸收体对红宝石激光器进行锁模，产生一列持续时间非常短的脉冲。通过快速切换克尔盒快门装置来选择其中两个脉冲。当用这两个脉冲产生运动物体的全息图时，会产生干涉图样，从中可以提取有关物体运动的信息。给出了显示薄镜运动状态的实验结果。在全息图重建中，可以清楚地看到一些使用时间分辨率较低的系统难以检测到的运动特征。
