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Proceedings Paper

Theoretical analysis and estimation of decorrelation phase error in digital holographic interferometry
Author(s): Tao Zhang; Yining Yan; Qingkai Mo
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Paper Abstract

In order to theoretically analyze and estimate decorrelation phase error in digital holographic interferometry, the principle of digital holographic imaging system is introduced in this paper, and general point spread function (PSF) of digital holographic system is derived and its approximate function is obtained. According to the characteristics of the digital holographic imaging in accordance with the laws of statistical optics, the expression of complex amplitude standard deviation of σA, σB and σC in each region of the double exposure time and the relationship between the degree of decorrelation are derived, and the expression of the phase error of decorrelation is given. It is simulated in MATLAB, simulative results indicate that statistical properties of decorrelation phase error obtained through theory analysis correspond to decorrelation phenomenon. And the measuring condition, in digital holography interferometry, which decorrelation degrees between the holographies of every double exposure should satisfy ρx + ρy <0.1, is derived.

Paper Details

Date Published: 19 October 2016
PDF: 8 pages
Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101550U (19 October 2016); doi: 10.1117/12.2245007
Show Author Affiliations
Tao Zhang, Sichuan Univ. (China)
Yining Yan, Sichuan Univ. (China)
Qingkai Mo, Sichuan Univ. (China)

Published in SPIE Proceedings Vol. 10155:
Optical Measurement Technology and Instrumentation
Sen Han; JiuBin Tan, Editor(s)

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