Method for fringe enhancement in holographic interferometry for measurement of in-plane displacements.

Abstract

Theoretical background along with experimental results are given for a simple method for in-plane fringe enhancement in dual-beam illumination holographic interferometry. In this method, the fringes representing in-plane displacements arise as a moirépattern between two interferograms. To distinguish the in-plane displacement, a sequence of images is recorded while the reference mirror is continuously tilted at random. The in-plane fringes arethen found as the maximum contrast of the out-of-plane fringes in the image sequence. The resulting fringe quality is close to the quality of the out-of-plane fringes.

Cite this paper

@article{Carlsson1998MethodFF, title={Method for fringe enhancement in holographic interferometry for measurement of in-plane displacements.}, author={Torgny E Carlsson and Jan H. Gustafsson and Nils H. Abramson}, journal={Applied optics}, year={1998}, volume={37 10}, pages={1845-8} }