Real-time digital holographic interferometry set-up for phase gradient study in dynamic phase objects using spatial modulator

Adrian Sima; Paul Schiopu; Petre C. Logofatu

doi:10.1117/12.2245899

14 December 2016 Real-time digital holographic interferometry set-up for phase gradient study in dynamic phase objects using spatial modulator

Adrian Sima, Paul Schiopu, Petre C. Logofatu

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Proceedings Volume 10010, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VIII; 100100R (2016) https://doi.org/10.1117/12.2245899
Event: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies 2016, 2016, Constanta, Romania

Abstract

A fully digital experimental set-up for real-time digital acquisition and digital optical reconstruction of holographic sequences is presented: a He-Ne laser, a CCD camera and a Phase Only Spatial Light Modulator (SLM) area are part of the set-up. CCD registering and SLM projector are working simultaneously. Using a custom made software of our own, real-time Digital Holographic Interferometry (DHI) “fringe motion pictures” can be performed by subtracting consecutive frames from a reference one and instantly displaying the differences on the SLM illuminated with a playback wave. Phase variations of the objects can be visualized in real-time by observing the interference fringe pattern evolution.

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Adrian Sima, Paul Schiopu, and Petre C. Logofatu "Real-time digital holographic interferometry set-up for phase gradient study in dynamic phase objects using spatial modulator", Proc. SPIE 10010, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VIII, 100100R (14 December 2016); https://doi.org/10.1117/12.2245899

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KEYWORDS

Digital holography

Holography

Spatial light modulators

Refractive index

Holograms

Water

Holographic interferometry

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