12 January 1994 Holographic microscopy with conjugated reconstruction for the investigation of deformations of surfaces
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Abstract
It is necessary to use a magnifying system for the investigation of very small diffusely reflecting objects by holographic interferometry. The influence of imaging errors as well as fringe localization in holographic interferometric microscopy with conjugated reconstruction was investigated in previous papers. In this paper we describe the possibility of applying the phase shifting technique in holographic microscopy with conjugated reconstruction. The phase shifting is a well known technique in interferometry for the investigation of phase distributions. By using digital image processing for the suppression of speckles it is possible to measure deformations of rough surfaces at sub-millimeter objects.
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Guenther K.G. Wernicke, Guenther K.G. Wernicke, Jan Hornung, Jan Hornung, Hartmut Gruber, Hartmut Gruber, } "Holographic microscopy with conjugated reconstruction for the investigation of deformations of surfaces", Proc. SPIE 2043, Holographic Imaging and Materials, (12 January 1994); doi: 10.1117/12.165591; https://doi.org/10.1117/12.165591
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