Digital holographic movie by using a point diffraction interferometer

A method to obtain a digital holographic movie by means of a point diffraction interferometer isdescribed. By using a parallel aligned liquid crystal wave plate of size 3 × 3 cm2, a phase shifting interferometrictechnique is implemented. The optical setup is able to operate at 10 frames∕s. Each frame can be digitally refocusedto reconstruct different planes of the three-dimensional (3-D) object. By changing the frame, the object canbe refocused in a different time. As an example, we show a movie which contains two objects that are separatedby 160 mm. The movie shows how, for a given time (a fixed hologram frame), we can focus at different planes(separated 0.1 mm) of the 3-D object, and by changing the frame the movement of the object can be observed. Fil: Iemmi, Claudio César. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina Fil: Ramírez, Claudio N.. Universitat Autònoma de Barcelona; España Fil: Campos, Juan. Universitat Autònoma de Barcelona; España