A phase interference method, for measurement of the relative change of surface acoustic wave velocities, is presented.
本文提出了一种相位干涉法。用来测量表面声波速度的相对变化。
Used the phase of laser interference fringes, a simple, fast and accurate micro displacement measuring method is proposed.
利用激光干涉条纹的位相，提出了一种简便、快速且精度很高的微小位移的测量方法。
Calculation method about phase difference and amplitude in interference pattern of convergent light has been proposed.
提出了晶体锥光干涉中两相干光的位相差和振幅的计算方法。
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