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Optical Engineering

Holographic interferometric microscope with conjugate reconstruction for measurement of three-dimensional displacements
Author(s): Oliver Kruschke; Guenther K.G. Wernicke; Hartmut Gruber
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Paper Abstract

A holographic microscope with conjugate reconstruction for the interferometric determination of 3-D displacement vectors is described. Three double-exposed holograms of different illumination directions recorded on one hologram plate are reconstructed conjugately, and phase-stepping techniques are used to evaluate the interferograms. Only by conjugate reconstruction it is possible to obtain a perfectly optimized interferometer for the static evaluation method. Using both phase-step and filtering techniques, the evaluation of interferograms greatly disturbed by speckle noise can be performed successfully.

Paper Details

Date Published: 1 April 1995
PDF: 6 pages
Opt. Eng. 34(4) doi: 10.1117/12.196520
Published in: Optical Engineering Volume 34, Issue 4
Show Author Affiliations
Oliver Kruschke, Humboldt Univ. zu Berlin (Germany)
Guenther K.G. Wernicke, Humboldt Univ. zu Berlin (Germany)
Hartmut Gruber, Humboldt Univ. Berlin (Germany)

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