Phase recovery using a twin-pulsed addition fringe pattern in ESPI

Authors
Ochoa, NA Marroquin, JL Davila, A
Citation
Na. Ochoa et al., Phase recovery using a twin-pulsed addition fringe pattern in ESPI, OPT COMMUN, 163(1-3), 1999, pp. 15-19
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS COMMUNICATIONS
ISSN journal
00304018 → ACNP
Volume
163
Issue
1-3
Year of publication
1999
Pages
15 - 19
Database
ISI
SICI code
0030-4018(19990501)163:1-3<15:PRUATA>2.0.ZU;2-O
Abstract
We present experimental results of a fringe processing method to obtain the phase of a twin-pulsed addition Electronic Speckle Pattern Interferometry (ESPI) fringe pattern. The fringe pattern is enhanced by means of a digital filter followed by a phase-demodulation method based on Bayesian regulariz ation theory. With this process a single pattern with arbitrary phase maps of sinusoidal profile can be demodulated. We illustrate its validity with a single pattern of closed loops. (C) 1999 Published by Elsevier Science B.V . All rights reserved.