From Event: SPIE Optical Engineering + Applications, 2018
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.
David I. Serrano-García and Yukitoshi Otani, "Dynamic interferometric measurements employing a pixelated polarization sensor and FFT spatial-temporal filtering techniques ," Proc. SPIE 10749, Interferometry XIX, 107490X (Presented at SPIE Optical Engineering + Applications: August 23, 2018; Published: 18 August 2018); https://doi.org/10.1117/12.2321650.
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