1 June 1988 " High Bandwith Laser Heterodyne Interferometer To Measure Transient Mechanical Displacements "
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Proceedings Volume 0863, Industrial Optoelectronic Measurement Systems Using Coherent Light; (1988); doi: 10.1117/12.943479
Event: 1987 Symposium on the Technologies for Optoelectronics, 1987, Cannes, France
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.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jean-Loup Lesne, Alain Le Brun, Daniel Royer, Eugene Dieulesaint, "" High Bandwith Laser Heterodyne Interferometer To Measure Transient Mechanical Displacements "", Proc. SPIE 0863, Industrial Optoelectronic Measurement Systems Using Coherent Light, (1 June 1988); doi: 10.1117/12.943479; https://doi.org/10.1117/12.943479
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KEYWORDS
Signal detection

Interferometers

Heterodyning

Signal to noise ratio

Nondestructive evaluation

Optoelectronics

Demodulation

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