Pozar Tomaz, Gregorcic Peter, Mozina Janez
Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Slovenia.
Opt Express. 2009 Dec 7;17(25):22906-11. doi: 10.1364/OE.17.022906.
We performed a single-shot, contactless measurement of ultrasonic waves on a laser-propelled rod with a homodyne quadrature laser interferometer (HQLI) during the entire duration of its motion. This is the first such experimental demonstration of the laser-induced motion of an elastic body where the most important mechanisms that reveal the nature of its motion are presented and explained. Furthermore, these measurements quantitatively demonstrate that the HQLI is an appropriate tool for monitoring high-amplitude (1.3 microm) and high-frequency (200 MHz) ultrasonic waves on moving objects. The applicability of the HQLI can also be extended to measure other optodynamic and high-frequency transient phenomena with a constant sensitivity and a resolution below 1 nm.
我们使用零差正交激光干涉仪（HQLI）在激光驱动杆的整个运动过程中对超声波进行了单次非接触测量。这是首次对弹性体的激光诱导运动进行此类实验演示，其中展示并解释了揭示其运动本质的最重要机制。此外，这些测量定量地证明了HQLI是监测移动物体上高振幅（1.3微米）和高频（200兆赫）超声波的合适工具。HQLI的适用性还可以扩展到以恒定灵敏度和低于1纳米的分辨率测量其他光动力学和高频瞬态现象。
