title: Phase extraction from fringe pattern via light propagation.
abstract: A phase demodulation method via light propagation is proposed, where one or two fringe patterns are viewed as the superposition of complex amplitudes, and then the phase is reconstructed by separating the light field via light propagation. Simulation and experimental results indicated that the proposed method can extract the phase from a single shot effectively, thereby realizing dynamic phase retrieval. In addition, the accuracy of phase reconstruction can be improved by adding another fringe pattern with an unknown phase shift. The carrier requirement is relatively low, and, thus, the proposed method can be applied to the measurements with an environment disturbance, an inaccurate phase shift, and the requirement of a high speed capture.
authors.forename: Wenhua
authors.initials: W
authors.lastname: Zhu
authors.forename: Lei
authors.initials: L
authors.lastname: Chen
authors.forename: Donghui
authors.initials: D
authors.lastname: Zheng
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Han