Advances in real-time holographic interferometry for the measurement of vibrations and deformations

Citation
J. Frejlich et Pm. Garcia, Advances in real-time holographic interferometry for the measurement of vibrations and deformations, OPT LASER E, 32(6), 1999, pp. 515-527
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Optics & Acoustics
Journal title
OPTICS AND LASERS IN ENGINEERING
ISSN journal
0143-8166 → ACNP
Volume
32
Issue
6
Year of publication
1999
Pages
515 - 527
Database
ISI
SICI code
0143-8166(199912)32:6<515:AIRHIF>2.0.ZU;2-R
Abstract
We describe the latest improvements in holographic interferometry that enab le the real-time measurement of vibrational modes and static deformations i n surfaces using low-power laser illumination and a photorefractive Bi12TiO 20 crystal as the recording medium. An efficient setup has been developed w here the most critical elements have been optimized: target illumination an d backscattered light collection, distribution of light between the object and reference beams, and stabilization system operation. Experimental resul ts for vibration and deformatiom measurement are reported. (C) 2000 Elsevie r Science Ltd. All rights reserved.