Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts 02114, USA.
Opt Lett. 2012 Sep 1;37(17):3678-80. doi: 10.1364/OL.37.003678.
The ability to quantify and visualize submicrometer-scale oscillatory motions of objects in three dimensions has a wide range of application in acoustics, materials sciences, and medical imaging. Here we demonstrate that volumetric snapshots of rapid periodic motion can be captured using optical coherence tomography (OCT) with subnanometer-scale motion sensitivity and microsecond-scale temporal resolution. This technique, termed OCT vibrography, was applied to generate time-resolved volumetric vibrographs of a miniature drum driven acoustically at several kilohertz.
定量和可视化亚微米尺度物体的三维振荡运动的能力在声学、材料科学和医学成像中有广泛的应用。在这里,我们展示了使用具有亚纳米级运动灵敏度和微秒级时间分辨率的光学相干断层扫描(OCT)可以捕获快速周期性运动的体积快照。这项技术被称为 OCT 振动图,它被应用于以数千赫兹的声频驱动的微型鼓的时间分辨体积振动图的生成。