18 April 1978 Heterodyne Holographic Interferometry: A Review
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Proceedings Volume 0136, 1st European Conf on Optics Applied to Metrology; (1978) https://doi.org/10.1117/12.956161
Event: First European Conference on Optics Applied to Metrology, 1977, Strasbourg, France
Heterodyne holographic interferometry is a combination of holographic infometry and opto-electronic fringe evaluation with the following outstanding properties (1,2): - fringe interpolation to better than 10-3 of a fringe (+ 0.3° for the interference phase); - measurement with the same accuracy at any desired position in the image, therefore high spatial resolution (> 100x100 points); - independent of brightness variations across the image; - inherently direction sensitive, i.e. increase and decrease of interference phase can be distinguished; - computer readable output both for position and phase easily obtained (allows on-line data processing); - inherently less sensitive to speckle noise than fringe intensity measurements.
© (1978) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rene Dandliker, "Heterodyne Holographic Interferometry: A Review", Proc. SPIE 0136, 1st European Conf on Optics Applied to Metrology, (18 April 1978); doi: 10.1117/12.956161; https://doi.org/10.1117/12.956161

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