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Proceedings Paper

New phase-locked demodulation method of photocarrier fringe patterns
Author(s): Wenyi Chen; Yushan Tan
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Paper Abstract

Recently, we proposed a new method called orthogonal coherent phase-lock detection (OCPLD) for demodulation of the phase distribution of photo-carrier fringe patterns. In OCPLD, if carrier fringe is introduced along the x-axis, orthogonal coherent phase detection technique is used to demodulate the phase distribution along the x-axis, while the phase-locked technique is used to track the phase variation along the y-axis. In this paper, OCPLD technique is presented, and its mathematical model of phase demodulation and phase transfer function are derived. The error analysis of OCPLD is also given. Experimental results show that OCPLD is a precision and rapid method.

Paper Details

Date Published: 1 January 1992
PDF: 7 pages
Proc. SPIE 1553, Laser Interferometry IV: Computer-Aided Interferometry, (1 January 1992); doi: 10.1117/12.135294
Show Author Affiliations
Wenyi Chen, Xi'an Jiaotong Univ. (China)
Yushan Tan, Xi'an Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 1553:
Laser Interferometry IV: Computer-Aided Interferometry
Ryszard J. Pryputniewicz, Editor(s)

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