用全息双频光栅测量物体的振动

Vibration measurement of objects by using holographic double-frequency grating

激光束入射至固定在振动物体上的全息双频光栅,其1级衍射光强度受到了振动的调制。本文介绍这种测振法的原理和一些实验结果,并对其应用作简要的讨论。

When a laser beam is incident onto a double-frequency holographic grating attached on a vibrating object, the intensity in the first order diffraction is modulated by the vibration. In this paper, the principle and some experimental results of this method are presented, and a brief discussion about the prospects of its applications is given.