Generalized experimental phase extraction algorithm for speckle interferometry

A. Barcelata-Pinzón; C. Meneses-Fabián; R. Juárez-Salazar; C. I. Robledo-Sánchez; M. Durán-Sánchez; R. I. Álvarez-Tamayo

doi:10.1117/12.2076301

10 March 2015 Generalized experimental phase extraction algorithm for speckle interferometry

A. Barcelata-Pinzón, C. Meneses-Fabián, R. Juárez-Salazar, C. I. Robledo-Sánchez, M. Durán-Sánchez, R. I. Álvarez-Tamayo

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Proceedings Volume 9386, Practical Holography XXIX: Materials and Applications; 938605 (2015) https://doi.org/10.1117/12.2076301
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

An alternative method for phase-shifting interferometry of two steps by using a speckle interferometer is proposed. It is shown that the introduced phase-step could be unknown because the use of an appropriate fringe-pattern processing. The acquired fringe patterns are processed by well established phase-shifting algorithms in order to compare these results with our proposal. Numerical phase difference between two states of phase object is compared with theoretical method using electronic speckle pattern interferometry (ESPI) . Simulated and experimental results are provided.

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A. Barcelata-Pinzón, C. Meneses-Fabián, R. Juárez-Salazar, C. I. Robledo-Sánchez, M. Durán-Sánchez, and R. I. Álvarez-Tamayo "Generalized experimental phase extraction algorithm for speckle interferometry", Proc. SPIE 9386, Practical Holography XXIX: Materials and Applications, 938605 (10 March 2015); https://doi.org/10.1117/12.2076301

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KEYWORDS

Phase shifts

Phase interferometry

Speckle

Interferometers

Speckle pattern

Speckle interferometry

Calibration

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