Difference displacement measurement by digital holography by use of simulated wave fronts

Appl Opt. 2004 Mar 10;43(8):1621-4. doi: 10.1364/ao.43.001621.

Abstract

A concept called fringe compensation was first presented in phase-shifting electronic speckle-pattern interferometry. We apply a similar principle to digital holographic interferometry; here the phase of a wave front is known and can be manipulated. The basic mathematical formulation of fringe compensation and some experimental results are shown with relatively large, simple rigid-body rotation and circular membrane deformation.