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Proceedings Paper

Dynamic interferometric measurements employing a pixelated polarization sensor and FFT spatial-temporal filtering techniques
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Paper Abstract

We implemented a Michelson interferometer capable to follow temporal phase variations. The system uses polarization phase shifting techniques and is coupled to the pixelated polarization sensor. By considering the space-time stability obtained, the systems allow a 3D FFT phase demodulation algorithm that combines the spatial carrier due of the pixelated polarization mask and a low pass filtering in time. In the system implementation, we reduced the usage of polarization components by observing the back propagated interferogram and, in the speckle reduction part, a laser combined with a spatial filter and speckle reducer commercially available commonly employed for projection. Experimental results presenting the enhancement in space and time are presented.

Paper Details

Date Published: 18 August 2018
PDF: 8 pages
Proc. SPIE 10749, Interferometry XIX, 107490X (18 August 2018); doi: 10.1117/12.2321650
Show Author Affiliations
David I. Serrano-García, Univ. de Guadalajara (Mexico)
Yukitoshi Otani, Utsunomiya Univ. (Japan)

Published in SPIE Proceedings Vol. 10749:
Interferometry XIX
Katherine Creath; Jan Burke; Michael B. North Morris; Angela D. Davies, Editor(s)

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