CONICET | Buscador de Institutos y Recursos Humanos

In this paper,we present a method to performphase-shifting interferometry in real time. The technique is based onthe use of a parallel aligned liquid crystal on a silicon display as a customized reference mirror. In order to implementthe four-step algorithm, a set of macropixels is programmed onto the display, and these are divided into fourzones with the appropriate phase shifts. This way, by spatial multiplexing, it is possible to obtain the phase of thewavefront at a rate limited only by the integration time of the employed detector. The customized mirror is able toboth compensate the initial curvature of the object under study and introduce the necessary phase shifts to performphase calculation. Examples of the phase reconstruction of static and dynamic objects are shown.

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