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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 14 — May. 10, 2001
  • pp: 2304–2309

Pulsed TV Holography Combined with Digital Speckle Photography Restores Lost Interference Phase

Per Gren  »View Author Affiliations


Applied Optics, Vol. 40, Issue 14, pp. 2304-2309 (2001)
http://dx.doi.org/10.1364/AO.40.002304


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Abstract

The measuring of situations with optical measuring methods is difficult when a deformation field must be determined while it is superposed to comparatively large rotating or translating object motion. Interferometric methods such as pulsed TV holography might be suitable to measure the small transient deformation, but the often-large bulk motion makes the phase information disappear. However, by a combination of digital speckle photography (DSP) (also called digital image correlation) with pulsed TV holography, such measuring problems can be mastered. A method to calculate the bulk in-plane motion by DSP from the usual pulsed TV holography recordings and then to use this information to restore the interference phase is proposed. This technique may be attractive in the study of transient vibrations overlaid on rotating or translating motions.

© 2001 Optical Society of America

OCIS Codes
(090.2880) Holography : Holographic interferometry
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.5060) Instrumentation, measurement, and metrology : Phase modulation

Citation
Per Gren, "Pulsed TV Holography Combined with Digital Speckle Photography Restores Lost Interference Phase," Appl. Opt. 40, 2304-2309 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-14-2304


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