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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 15 — May. 20, 2006
  • pp: 3456–3462

High-speed digital holographic interferometry for vibration measurement

Giancarlo Pedrini, Wolfgang Osten, and Mikhail E. Gusev  »View Author Affiliations


Applied Optics, Vol. 45, Issue 15, pp. 3456-3462 (2006)
http://dx.doi.org/10.1364/AO.45.003456


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Abstract

A system based on digital holographic interferometry for the measurement of vibrations is presented. A high-power continuous laser ( 10 ‚ÄČ W ) and a high-speed CCD camera are used. Hundreds of holograms of an object that has been subjected to dynamic deformation are recorded. The acquisition speed and the time of exposure of the detector are determined by the vibration frequency. Two methods are presented for triggering the camera in order to acquire at a given phase of the vibration. The phase of the wavefront is calculated from the recorded holograms by use of a two-dimensional digital Fourier-transform method. The deformation of the object is obtained from the phase. By combination of the deformations recorded at different times it is possible to reconstruct the vibration of the object.

© 2006 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2880) Instrumentation, measurement, and metrology : Holographic interferometry
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 1, 2005
Manuscript Accepted: December 19, 2005

Citation
Giancarlo Pedrini, Wolfgang Osten, and Mikhail E. Gusev, "High-speed digital holographic interferometry for vibration measurement," Appl. Opt. 45, 3456-3462 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-15-3456

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