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Proceedings Paper

Heterodyne Holographic Interferometry: A Review
Author(s): Rene Dandliker
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Paper Abstract

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.

Paper Details

Date Published: 18 April 1978
PDF: 3 pages
Proc. SPIE 0136, 1st European Conf on Optics Applied to Metrology, (18 April 1978); doi: 10.1117/12.956161
Show Author Affiliations
Rene Dandliker, Brown Boveri Research Center (Switzerland)

Published in SPIE Proceedings Vol. 0136:
1st European Conf on Optics Applied to Metrology
Michel H. Grosmann; Patrick Meyrueis, Editor(s)

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