Using a programmable interferometer for digital phase-shifting speckle interferometry

Year: 1997

Authors: Greco V., Hoffer L., Molesini G., Trivi M.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Centro de Investigaciones Opticas, CICPBA and Facultad de Ingenieria, Universidad de La Plata, La Plata, Argentina

Abstract: The use of a programmable phase-shifting interferometer to detect the deformation of scattering surfaces is described. The interferometer is a commercial instrument in use for optical resting applications; the sample surface is imaged as a speckle pattern. The measuring procedure and the program are outlined, and an experimental demonstration on an aluminium plate under load is given. (C) 1997 Elsevier Science Ltd.


Volume: 27 (2)      Pages from: 235  to: 240

More Information: We wish to thank G. Pedrini for useful discussionsa nd comments.L .H. acknowledgest he support of a Human & Capital Mobilities Research Training Fellowship from the European Community. M.T. acknowledges the support of the ‘ICTP programmef or training and researchi n Italian laboratories’,T rieste, Italy.
KeyWords: Aluminum; Computer programming; Digital devices; Interferometry; Optical testing; Plate metal; Speckle; Surface phenomena; Aluminum plate; Digital phase shifting speckle interferometry; Programmable interferometers; Surface deformation; Interferometers
DOI: 10.1016/S0143-8166(96)00123-6

Connecting to view paper tab on IsiWeb: Click here