[en] An original experimental setup for shearography with metrological applications is presented. The simplicity and the efficiency of the setup are provided by a shearing device, a prism that separates the TE and TM polarization modes with a coating and a thin glass plate placed on its face. The use of this shearing device enables an in-line and almost-common path configuration for the shearing interferometer, a path that leads to high stability and a low sensitivity to external disturbances. Moreover, the sensitivity of the interferometer can be easily adjusted for different applications by varying the shearing amount with glass plates of different thicknesses or by moving the shearing device between two lenses along the optical axis. The temporal phase-shifting method is applied through the use of a liquid crystal variable retarder. (c) 2007 Society of Photo-Optical Instrumentation Engineers.
Research center :
Service de Physique Générale, Hololab
Disciplines :
Electrical & electronics engineering
Author, co-author :
Rosso, Vanessa ; Université de Liège - ULiège > HEC-Ecole de gestion : UER > Mathématiques appliquées aux sc. économiques et de gestion
Renotte, Yvon ; Université de Liège - ULiège > Département de physique > Optique - Hololab
Habraken, Serge ; Université de Liège - ULiège > Département de physique > Optique - Hololab
R. Jones and C. Wykes, Holographic and Speckle Interferometry Cambridge Univ. Press, Cambridge (1989).
P. K. Rastogi, Digital Speckle Pattern Interferometry and Related Techniques, John Wiley & Sons, Chichester (2001).
W. Steinchen and L. Yang, Digital Shearography, SPIE Press, Bellingham, WA (2003).
C. A. Walker, Ed., Handbook of Moiŕ Measurement, Series in Optics and Optoelectronics, IOP Publishing Ltd., Bristol (2004).
Y. Y. Hung, " A speckle-shearing interferometer: A tool for measuring derivatives of surface displacements.," Opt. Commun. OPCOB8 0030-4018 10.1016/0030-4018(95)00326-4 11 (2), 132-135 (1974).
V. M. Murukeshan, O. L. Seng, and A. Asundi, " Polarization phase shifting shearography for optical metrological applications.," Opt. Laser Technol. OLTCAS 0030-3992 10.1016/S0030-3992(99)00005-5 30 (8), 527-531 (1998).
Y. Y. Hung, " Applications of digital shearography for testing of composite structures.," Composites, Part B CPBEFF 1359-8368 10.1016/S1359-8368(99)00027-X 30 (7), 765-773 (1999).
G. Montay, M. Fraņois, M. Tourneix, B. Guelorget, C. Vial-Edwards, and I. Lira, " Analysis of plastic strain localization by a combination of the speckle interferometry with the bulge test.," Opt. Lasers Eng. OLENDN 0143-8166 45 (1), 222-228 (2007).
H. M. Shang, Y. Y. Hung, W. D. Luo, and F. Chen, " Surface profiling using shearography.," Opt. Eng. OPEGAR 0091-3286 10.1117/1.602331 39 (1), 23-31 (2000).
R. M. Groves, S. W. James, and R. P. Tatam, " Shape and slope measurement by source displacement in shearography.," Opt. Lasers Eng. OLENDN 0143-8166 41 (4), 621-634 (2004).
J. C. Wyant, " Double frequency grating lateral shear interferometer.," Appl. Opt. APOPAI 0003-6935 12 (9), 2057-2060 (1973).
K. Matsuda and M. Namiki, " Holographic lateral shear interferometer for differential interference contrast method.," J. Opt. JOOPDB 0150-536X 11, 81-85 (1980).
Y. Y. Hung and C. E. Taylor, " Measurement of slopes of structural deflections by speckle-shearing interferometry.," Exp. Mech. EXMCAZ 0014-4851 10.1007/BF02322832 14 (7), 281-285 (1974).
A. R. Ganesan, D. K. Sharma, and M. P. Kothiyal, " Universal digital speckle shearing interferometer.," Appl. Opt. APOPAI 0003-6935 27 (22), 4731-4734 (1988).
J. D. Valera and J. D. C. Jones, " Phase stepping in fiber-based speckle shearing interferometry.," Opt. Lett. OPLEDP 0146-9592 19 (15), 1161-1163 (1994).
R. M. Groves, S. W. James, and R. P. Tatam, " Polarization- multiplexed and phase-stepped fibre optic shearography using laser wavelength modulation.," Meas. Sci. Technol. MSTCEP 0957-0233 10.1088/0957-0233/11/9/ 320 11, 1389-1395 (2000).
D. C. Ghiglia and M. D. Pritt, Two-Dimensional Phase Unwrapping: Theory, Algorithms, and Software, Wiley, New York (1998).
T. J. Flynn, " Two-dimensional phase unwrapping with minimum weighted discontinuity.," J. Opt. Soc. Am. A JOAOD6 0740-3232 14 (10), 2692-2701 (1997).
A. Baldi, " Phase unwrapping by region growing.," Appl. Opt. APOPAI 0003-6935 10.1364/AO.42.002498 42 (14), 2498-2505 (2003).
P. Slangen and B. Gautier, " Nematic liquid crystals light valve calibration and application to phase shifting speckle interferometry.," in Speckle06: Speckles, From Grains to Flowers, P. Slangen, and, C. Cerruti, Eds., Proc. SPIE PSISDG 0277-786X 6341, 63410C (2006).
N. A. Ochoa and J. M. Huntley, " Convenient method for calibrating nonlinear phase modulators for use in phase-shifting interferometry.," Opt. Eng. OPEGAR 0091-3286 10.1117/1.602025 37 (9), 2501-2505 (1998).
V. Rosso, F. Michel, V. Moreau, Y. Renotte, B. Tilkens, and Y. Lion, " Highlighting properties of filters for their application in temporal phase shifting interferometry.," in Photonic Applications in Biosensing and Imaging, W. C. Chan, K. Yu, U. J. Krull, R. I. Hornsey, B. C. Wilson, and, R. A. Weersink, Eds., Proc. SPIE PSISDG 0277-786X 5969, 626-635 (2005).
H. A. Aebischer and S. Waldner, " A simple and effective method for filtering speckle-interferometric phase fringe patterns.," Opt. Commun. OPCOB8 0030-4018 10.1016/S0030-4018(99)00116-9 162 (4-6), 205-210 (1999).
