17 July 1996 Evaluation of fringe patterns in an optimized holographic interferometric microscope with conjugated reconstruction
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Abstract
Holographic microscopy with conjugate reconstruction for the interferometrie determination of three-dimensional displacement is described. Three double-exposed holograms for different illumination directions recorded on one holographic plate are reconstructed conugately , and spatial heterodyne technique was used to evaluate the interferograms. Only by conjugated reconstruction it is possible to obtain a perfectly optimized interferometer for the static evaluation method. The evaluation of strongly disturbed interferograms by speckle noise can be performed successfully. A comparison of the spatial heterodyne with the phase shift technique is given.
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Guenther K.G. Wernicke, Oliver Kruschke, Torsten Huth, Nazif Demoli, Hartmut Gruber, "Evaluation of fringe patterns in an optimized holographic interferometric microscope with conjugated reconstruction", Proc. SPIE 2860, Laser Interferometry VIII: Techniques and Analysis, (17 July 1996); doi: 10.1117/12.276295; https://doi.org/10.1117/12.276295
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