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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 14 — May. 10, 2006
  • pp: 3218–3225

Three-wavelength electronic speckle pattern interferometry with the Fourier-transform method for simultaneous measurement of microstructure-scale deformations in three dimensions

Eric B. Flynn, Lori C. Bassman, Timothy P. Smith, Zamir Lalji, Laurel H. Fullerton, Tommy C. Leung, Scott R. Greenfield, and Aaron C. Koskelo  »View Author Affiliations


Applied Optics, Vol. 45, Issue 14, pp. 3218-3225 (2006)
http://dx.doi.org/10.1364/AO.45.003218


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Abstract

We present the simultaneous measurement of three-dimensional deformations by electronic speckle pattern interferometry using five object beams and three colors. Each color, corresponding to an orthogonal direction of displacement, is separated through dichroic filtering before being recorded by a separate CCD camera. Carrier fringes are introduced by tilting the beam path in one arm of each of the three interferometers. The measured deformation modulates these carrier fringes and is extracted using the Fourier-transform method to achieve high displacement sensitivity. The field of view is on the order of a millimeter, making the system suitable for study of microstructural deformations. We compare experimental results with calculated values to validate out-of-plane and in-plane deformation measurements and demonstrate sensitivity on the order of 10 ‚ÄČ nm .

© 2006 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry

History
Original Manuscript: August 22, 2005
Manuscript Accepted: October 11, 2005

Citation
Eric B. Flynn, Lori C. Bassman, Timothy P. Smith, Zamir Lalji, Laurel H. Fullerton, Tommy C. Leung, Scott R. Greenfield, and Aaron C. Koskelo, "Three-wavelength electronic speckle pattern interferometry with the Fourier-transform method for simultaneous measurement of microstructure-scale deformations in three dimensions," Appl. Opt. 45, 3218-3225 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-14-3218

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