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Proceedings Paper

Features of multiband speckle shearography
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Paper Abstract

Applications for coherent optical metrology usually use lasers as light sources, because of the excellent spatial and temporal coherence of the emitted light. By comparison, the demands of speckle shearography concerning the coherence of the light source are low. This enables certain white-light sources like mercury arc lamps to be an option. But using such a light source leads to new problems. Both the spatial and the temporal coherence are low. Due to the fact that multiple wavelengths are involved, dispersion effects become an issue and must be considered. Therefore, in this paper the multiband speckle shearography using a mercury arc lamp is investigated. Especially the problems arising from the light source are regarded. Finally, some experimental investigations of an object under load are presented.

Paper Details

Date Published: 29 July 2002
PDF: 8 pages
Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); doi: 10.1117/12.484535
Show Author Affiliations
Claas Falldorf, Bremer Institut fuer Angewandte Strahltechnik (Germany)
Wolfgang Osten, Bremer Institut fuer Angewandte Strahltechnik (Germany)
Ervin Kolenovic, Bremer Institut fuer Angewandte Strahltechnik (Germany)
Werner P. O. Jueptner, Bremer Institut fuer Angewandte Strahltechnik (Germany)


Published in SPIE Proceedings Vol. 4900:
Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life
Yuri V. Chugui; Sergei N. Bagayev; Albert Weckenmann; P. Herbert Osanna, Editor(s)

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