Effect of Phase-Shifting Error on Deformation Evaluation Using Phase-Shifting Digital Holography

Abstract:

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Phase-shifting technique is an effect way to suppress the zero order diffraction and the conjugate term in digital holography. However the phase-shifting error will influence inevitably the evaluation precision in practice operation. In this paper, the deformation evaluation errors by means of two kinds of four-step phase-shifting algorithms, which are in common use in digital holography, are analyzed and compared by computer simulation. In addition, the phase-shifting errors may cumulate or not according to different phase-shifting techniques, and both cases are considered in this paper. The results based on the digital in-line holography show that the two four-step phase-shifting algorithms possess different sensitivity to the phase-shifting errors, and the preferable one, which is more immune to the phase-shifting errors, is educed in conclusion.

Info:

Periodical:

Key Engineering Materials (Volumes 326-328)

Edited by:

Soon-Bok Lee and Yun-Jae Kim

Pages:

27-30

DOI:

10.4028/www.scientific.net/KEM.326-328.27

Citation:

X. Kang, X. Y. He, C. J. Tay, C. Quan, "Effect of Phase-Shifting Error on Deformation Evaluation Using Phase-Shifting Digital Holography", Key Engineering Materials, Vols. 326-328, pp. 27-30, 2006

Online since:

December 2006

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Price:

$35.00

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