用激光外差法探測固體表面超聲位移
Detecting Ultrasonic Displacement on Solid Surface by Laser Heterodyne Method
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摘要: 論述了應用激光外差和鎖相環解調原理探測固體表面超聲位移的原理、方法,并利用激光外差干涉儀對固體表面的超聲位移進行了探測,得到了很好的結果。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.
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