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Proceedings Paper

Accuracy and high-speed technique for autoprocessing of Young's fringes
Author(s): Wenyi Chen; Yushan Tan
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Paper Abstract

In this paper, an accuracy and high speed method for auto-processing of young’s fringes is proposed. A group of 1-D sampled intensity values along three or more different directions are taken from young’s fringes, and the fringe spacings of every direction are obtained by 1-D FFT respectively. Two directions which have smaller fringe spacing are selected from all directions. The accurate fringe spacings along these two directions are obtained by using orthogonal coherent phase detection technique (OCPD). The actual spacing and angle of young’s fringes, therefore, can be calculated. In this paper the principle of OCPD is introduced in detail. The accuracy of the method is evaluated theoretically and experimentally.

Paper Details

Date Published: 1 December 1991
Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); doi: 10.1117/12.49538
Show Author Affiliations
Wenyi Chen, Xi'an Jiaotong Univ. (China)
Yushan Tan, Xi'an Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 1554:
Second International Conference on Photomechanics and Speckle Metrology
Fu-Pen Chiang; Fu-Pen Chiang, Editor(s)

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