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Optical Engineering

Algorithm for directly retrieving the phase difference: a generalization
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Paper Abstract

Determination of phase difference is important in many applications of optical metrology. Algorithms for temporal phase difference measurement using the Fourier transform and phase shifting methods are available. These algorithms are first shown to be equivalent and then are generalized for spatial phase difference measurements and a spatial carrier phase shifting method. The efficiency of the algorithm is verified by two examples for slope and curvature determination.

Paper Details

Date Published: 1 June 2003
PDF: 4 pages
Opt. Eng. 42(6) doi: 10.1117/1.1573640
Published in: Optical Engineering Volume 42, Issue 6
Show Author Affiliations
Kemao Qian, Nanyang Technological Univ. (Singapore)
Anand Krishna Asundi, Nanyang Technological Univ. (Singapore)

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