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Proceedings Paper

" High Bandwith Laser Heterodyne Interferometer To Measure Transient Mechanical Displacements "
Author(s): Jean-Loup Lesne; Alain Le Brun; Daniel Royer; Eugene Dieulesaint
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Paper Abstract

As part of the research in optical techniques for non-destructive evaluation (NDE), we have considered the reception of elastic waves with no contact via a heterodyne detection wideband laser interferometer. The purpose of this article is to present the performances of the model. We have included the operating principles of laser interferometry, the reasons for the technological choices made, the electronic reception system and signal demodulation. The performances of the transient microdisplacement measurement are depicted with few experiments in the field of NDE.

Paper Details

Date Published: 1 June 1988
PDF: 10 pages
Proc. SPIE 0863, Industrial Optoelectronic Measurement Systems Using Coherent Light, (1 June 1988); doi: 10.1117/12.943479
Show Author Affiliations
Jean-Loup Lesne, Electricite de France (France)
Alain Le Brun, Electricite de France (France)
Daniel Royer, Universite P. et M. Curie (France)
Eugene Dieulesaint, Universite P. et M. Curie (France)


Published in SPIE Proceedings Vol. 0863:
Industrial Optoelectronic Measurement Systems Using Coherent Light
William F. Fagan, Editor(s)

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