Publications by authors named "Miguel Asmad"
Suppressing ripple distortions and spurious pistons in phase-shifting interferometry.
J Opt Soc Am A Opt Image Sci Vis
April 2020
Article Synopsis
- The paper talks about new algorithms called phase-shifting algorithms (PSAs) that help fix problems in a type of measurement technique called phase-shifting interferometry.
- These problems, known as ripple distortions and spurious pistons, happen when the algorithms assume the phase shifts are uniform, but they aren't.
- The authors suggest using a mathematical model to better handle these non-uniform phase shifts and provide four formulas for the new algorithms, backed up by computer simulations.
In this paper, we propose a phase measurement method for interferograms with nonuniform phase shifts. First, we measure the phase shifts between consecutive interferograms. Second, we use these values to modify the spectrum of the interferogram data.
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