New adaptive phase-shifting algorithm for temporal phase evaluation

Pablo D. Ruiz; Guillermo H. Kaufmann; Jonathan Mark Huntley

doi:10.1117/12.472226

20 June 2002 New adaptive phase-shifting algorithm for temporal phase evaluation

Pablo D. Ruiz, Guillermo H. Kaufmann, Jonathan Mark Huntley

Proceedings Volume 4777, Interferometry XI: Techniques and Analysis; (2002) https://doi.org/10.1117/12.472226
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The measurement of dynamic displacements using speckle interferometry and temporal phase unwrapping allows the evaluation of displacement fields without the propagation of spatial unwrapping errors. In this work we present a novel temporal phase-shifting (TPS) method that searches for the peak of the windowed Fourier transform of the modulated intensity signal and evaluates the phase at that frequency instead of at the carrier frequency. The performance of this TPS method is compared with that of standard algorithms by using numerical simulations. The unwrapping success rate and the spatial rms phase error are evaluated, and experimental results that show the performance of this new approach are finally presented.

Citation Download Citation

Pablo D. Ruiz, Guillermo H. Kaufmann, and Jonathan Mark Huntley "New adaptive phase-shifting algorithm for temporal phase evaluation", Proc. SPIE 4777, Interferometry XI: Techniques and Analysis, (20 June 2002); https://doi.org/10.1117/12.472226

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