Article (Scientific journals)
Real-time stroboscopic holographic interferometry using sillenite crystals for the quantitative analysis of vibrations
Georges, Marc; Lemaire, Philippe
1998In Optics Communications, 145, p. 249-257
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Keywords :
Photorefractive crystals; Holographic interferometry; Vibration measurements
Abstract :
[en] A breadboard holographic interferometer that uses a photorefractive sillenite crystal under anisotropic diffraction configuration is presented for application of quantitative vibration measurements. After the hologram of the object at rest is recorded, a stroboscope is used to observe the stable pattern of the vibrating object and phase-shifting is introduced for quantitative measurements. It is shown that this system can measure modal displacements of objects of typically 23×23 cm2 with high accuracy (λ/40) by using a continuous YAG laser emitting 490 mW at 532 nm. The error sources are investigated and particularly a systematic error arising from the stroboscopic process can be calculated and eliminated.
Disciplines :
Physics
Author, co-author :
Georges, Marc ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Lemaire, Philippe
Language :
English
Title :
Real-time stroboscopic holographic interferometry using sillenite crystals for the quantitative analysis of vibrations
Publication date :
01 January 1998
Journal title :
Optics Communications
ISSN :
0030-4018
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
145
Pages :
249-257
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 November 2010

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