Instrumentation, Techniques, and Measurement

Digital holographic movie by using a point diffraction interferometer

[+] Author Affiliations
Claudio Iemmi

Universidad de Buenos Aires, FCEyN—CONICET, Departamento de Física, Buenos Aires 1428, Argentina

Claudio Ramírez, Juan Campos

Universidad Autónoma de Barcelona, Departamento de Física, Bellaterra 08193, Spain

Opt. Eng. 54(4), 044104 (Apr 21, 2015). doi:10.1117/1.OE.54.4.044104
History: Received December 2, 2014; Accepted March 27, 2015
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Abstract.  A method to obtain a digital holographic movie by means of a point diffraction interferometer is described. By using a parallel aligned liquid crystal wave plate of size 3×3cm2, a phase shifting interferometric technique is implemented. The optical setup is able to operate at 10frames/s. Each frame can be digitally refocused to reconstruct different planes of the three-dimensional (3-D) object. By changing the frame, the object can be refocused in a different time. As an example, we show a movie which contains two objects that are separated by 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.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Claudio Iemmi ; Claudio Ramírez and Juan Campos
"Digital holographic movie by using a point diffraction interferometer", Opt. Eng. 54(4), 044104 (Apr 21, 2015). ; http://dx.doi.org/10.1117/1.OE.54.4.044104


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