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Proceedings Paper

Digital interferometry using sequentially recorded intensity patterns
Author(s): B. Gombkötö; J. Kornis
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Paper Abstract

Sequentially recorded intensity patterns reflected from a laser illuminated diffuse object can be used to reconstruct the complex amplitude of the scattered beam. Several iterative phase retrieval algorithms are known in the literature to obtain the initially unknown phase from these longitudinally displaced intensity patterns. When two sequences are recorded in two states of the object in similar experimental setups, as is digital holographic interferometry - but omitting the reference wave-, displacement, deformation, or shape measurement can be done. Although the object-beam-only setup is not so sensitive to vibrations, several other factors influence the success of the measurements, the position or angle alignment of the linear stage. The results of initial simulations and measurements of displacement are presented, and the convergence of the phase retrieval is examined.

Paper Details

Date Published: 17 June 2009
PDF: 6 pages
Proc. SPIE 7389, Optical Measurement Systems for Industrial Inspection VI, 73890X (17 June 2009); doi: 10.1117/12.827527
Show Author Affiliations
B. Gombkötö, Budapest Univ. of Technology and Economics (Hungary)
J. Kornis, Budapest Univ. of Technology and Economics (Hungary)


Published in SPIE Proceedings Vol. 7389:
Optical Measurement Systems for Industrial Inspection VI
Peter H. Lehmann, Editor(s)

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