Two-step phase demodulation algorithm based on the extreme value of interference.

Opt Lett

Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China.

Published: November 2012

Using the maximum and the minimum of interference, a novel two-step phase demodulation algorithm is proposed to perform the phase extraction in phase-shifting interferometry. By means of the simulation calculation and the experimental research, it is proved that both the measured phase and the phase shift with high precision can be obtained in the proposed algorithm.

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http://dx.doi.org/10.1364/ol.37.004669DOI Listing

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