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Applied Optics

Applied Optics


  • Vol. 41, Iss. 13 — May. 1, 2002
  • pp: 2454–2460

Real-time speckle interferometry fringe formation with an adaptive phase mask

Yuji Shen, Noe Alcala Ochoa, and Jonathan M. Huntley  »View Author Affiliations

Applied Optics, Vol. 41, Issue 13, pp. 2454-2460 (2002)

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We describe what we believe is a novel speckle-pattern interferometry method of applying a spatial light modulator (SLM) as an adaptive phase mask to obtain real-time fringes of a deformed object without using conventional correlation methods of electronic subtraction or addition. The method is to use a SLM to cancel initial phase in the speckled image before the object is deformed. The fringes from the deformed object can be visualized directly after the initial phase has been canceled. A commercial liquid-crystal television is used as a SLM. The performance of using this SLM in an out-of-plane speckle interferometer is demonstrated.

© 2002 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
(230.6120) Optical devices : Spatial light modulators

Original Manuscript: July 30, 2001
Revised Manuscript: December 21, 2001
Published: May 1, 2002

Yuji Shen, Noe Alcala Ochoa, and Jonathan M. Huntley, "Real-time speckle interferometry fringe formation with an adaptive phase mask," Appl. Opt. 41, 2454-2460 (2002)

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