用激光外差法探测固体表面超声位移

基金项目:

国家自然科学基金资助项目

详细信息

Detecting Ultrasonic Displacement on Solid Surface by Laser Heterodyne Method

摘要: 论述了应用激光外差和锁相环解调原理探测固体表面超声位移的原理、方法,并利用激光外差干涉仪对固体表面的超声位移进行了探测,得到了很好的结果。
- 超声测量 /
- 激光外差 /
- 干涉仪
Abstract: The principle and way of dectecing ultrasonic displacement of solid surfaces with laser heterodyne and phase-lockedloop to demodulate are described. Ultrasonic displacement of solid surfaces is detected with a laser heterodyne interferometer and a satisfactory conclusion is got.
- ultrasonic measurement /
- laser heterodyne /
- interferometer