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Proceedings Paper

Optimization of setups by means of geometric functions
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Paper Abstract

Holographic interferometry promises highly accurate and precise measurement of displacement or deformation. Modern fringe evaluation systems allow determination of the relative fringe order down to less than one percent, and are expected to have the same accuracy in the evaluated dislocation and deformation field. However, one should recognize that accuracy starts with the optimization of the set-up and ends with it. A method to optimize the set-up for holographic interferometric measurements and to predict the sensitivity for the different displacements is reported. The method is developed from the holo-diagram by a quantification of the change of the light way. This leads to functions which describe the sensitivity of the set-up for displacements in the different directions. These functions are called the geometric functions. The values of the geometric functions at a given point are identical with the components of the sensitivity vector. The potential to optimize set-ups by means of these functions is shown by an example.

Paper Details

Date Published: 5 February 1993
PDF: 8 pages
Proc. SPIE 1755, Interferometry: Techniques and Analysis, (5 February 1993); doi: 10.1117/12.140764
Show Author Affiliations
Werner P. O. Jueptner, Bremer Institut fuer Angewandte Strahltechnik (Germany)

Published in SPIE Proceedings Vol. 1755:
Interferometry: Techniques and Analysis
Gordon M. Brown; Osuk Y. Kwon; Malgorzata Kujawinska; Graeme T. Reid, Editor(s)

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