Vol. 10, Issue 1, pp. 3-12

Abstract

The evaluation of a small change in the position of a diffused object by means of differential holographic interferometry is the subject of this paper. The equations of interference fringes will be derived for a quite general displacement of rigid body and for a quite general shape of the object surface. For the plane surface of the object the interference pattern will be analysed in details, and the method for determining the displacement of a rigid body from one interference pattern will be shown.