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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 13 — May. 1, 2001
  • pp: 2117–2125

Vibration-induced phase errors in high-speed phase-shifting speckle-pattern interferometry

Pablo D. Ruiz, Jonathan M. Huntley, Yuji Shen, C. Russell Coggrave, and Guillermo H. Kaufmann  »View Author Affiliations


Applied Optics, Vol. 40, Issue 13, pp. 2117-2125 (2001)
http://dx.doi.org/10.1364/AO.40.002117


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Abstract

We present results from numerical simulations of a dynamic phase-shifting speckle interferometer used in the presence of mechanical vibrations. The simulation is based on a detailed mathematical model of the system, which is used to predict the expected frequency response of the rms measurement error, in the time-varying phase difference maps, as a result of vibration. The performance of different phase-shifting algorithms is studied over a range of vibrational frequencies. Phase-difference evaluation is performed by means of temporal phase shifting and temporal phase unwrapping. It is demonstrated that longer sampling windows and higher framing rates are preferred in order to reduce the phase-change error that is due to vibration. A numerical criterion for an upper limit on the length of time window for the phase-shifting algorithm is also proposed. The numerical results are finally compared with experimental data, acquired with a phase-shifting speckle interferometer of 1000 frames/s.

© 2001 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis

History
Original Manuscript: August 9, 2000
Published: May 1, 2001

Citation
Pablo D. Ruiz, Jonathan M. Huntley, Yuji Shen, C. Russell Coggrave, and Guillermo H. Kaufmann, "Vibration-induced phase errors in high-speed phase-shifting speckle-pattern interferometry," Appl. Opt. 40, 2117-2125 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-13-2117

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