Holographic interferometric microscope with conjugate reconstruction for measurement of three-dimensional displacements

Oliver Kruschke; Guenther K.G. Wernicke; Hartmut Gruber

doi:10.1117/12.196520

1 April 1995 Holographic interferometric microscope with conjugate reconstruction for measurement of three-dimensional displacements

Oliver Kruschke, Guenther K.G. Wernicke, Hartmut Gruber

Author Affiliations +

Optical Engineering, Vol. 34, Issue 4, (April 1995). https://doi.org/10.1117/12.196520

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.

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Oliver Kruschke, Guenther K.G. Wernicke, and Hartmut Gruber "Holographic interferometric microscope with conjugate reconstruction for measurement of three-dimensional displacements," Optical Engineering 34(4), (1 April 1995). https://doi.org/10.1117/12.196520

Published: 1 April 1995

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