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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 19 — Jul. 1, 2006
  • pp: 4534–4539

Simultaneous two-dimensional endoscopic pulsed digital holography for evaluation of dynamic displacements

Tonatiuh Saucedo A., Fernando Mendoza Santoyo, Manuel De la Torre Ibarra, Giancarlo Pedrini, and Wolfgang Osten  »View Author Affiliations


Applied Optics, Vol. 45, Issue 19, pp. 4534-4539 (2006)
http://dx.doi.org/10.1364/AO.45.004534


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Abstract

An endoscope is used in pulsed digital holography to simultaneously evaluate in-plane and out- of-plane transient and harmonic displacements on a flat metallic plate. The plate is illuminated from two different directions. The optical path for each illumination direction is matched to its corresponding reference beam, but also in such a way that each object–reference beam pair optical path is mismatched such that they are incoherent and can be stored in a single CCD frame. As is typical in these types of interferometric arrangement, two digital holograms are needed to compare two different states of the plate. Each hologram is Fourier transformed and due to the incoherence introduced, two separate spectra are readily identified, each belonging to an object–reference beam pair. On comparing by subtraction the phase obtained from the two pulsed digital holograms, it is possible to gather quantitative in-plane and out-of- plane results from transient and harmonic displacements.

© 2006 Optical Society of America

OCIS Codes
(090.2880) Holography : Holographic interferometry
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(170.2150) Medical optics and biotechnology : Endoscopic imaging

History
Original Manuscript: October 27, 2005
Revised Manuscript: January 16, 2006
Manuscript Accepted: January 19, 2006

Virtual Issues
Vol. 1, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Tonatiuh Saucedo A., Fernando Mendoza Santoyo, Manuel De la Torre Ibarra, Giancarlo Pedrini, and Wolfgang Osten, "Simultaneous two-dimensional endoscopic pulsed digital holography for evaluation of dynamic displacements," Appl. Opt. 45, 4534-4539 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-19-4534

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