Numerical results are presented to show the characterization of an electromechanical actuator capable to achieve equally spaced phase shifts and fraction linear wavelength displacements aided by an interface and a computational system. Measurements were performed by extracting the phase with consecutive interference patterns obtained in a Michelson arrangement setup. This paper is based in the use of inexpensive resources on stability adverse conditions to achieve similar results to those obtained with high-grade systems.
A radial displacement cyclic interferometer parallel beams is used to generate phase shifts.
Simultaneously engages an architecture that generates the same moment two interferograms with a
phase shift of pi / 2 between them. This phase shift is obtained using optical components. Unlike the
arrangements that use a grid in the Fourier plane, where the distance between interference patterns
obtained are not adjustable, but is determined by the length of the grid, in the configuration
presented, is sufficient to shift one of the reflecting mirrors in order to control the separation
between interferograms.. A phase object is used. Interferometric arrangement is presented, and the
results obtained experimentally.
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