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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 19 — Oct. 1, 2010
  • pp: 3273–3275

Electronic speckle-pattern interferometer using holographic optical elements for vibration measurements

Viswanath Bavigadda, Raghavendra Jallapuram, Emilia Mihaylova, and Vincent Toal  »View Author Affiliations


Optics Letters, Vol. 35, Issue 19, pp. 3273-3275 (2010)
http://dx.doi.org/10.1364/OL.35.003273


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Abstract

We report a simple, compact electronic speckle-pattern interferometer (ESPI) incorporating holographic optical elements (HOEs) for the study of out-of-plane vibration. Reflection and transmission HOEs provide reference and object beams in the interferometer. The alignment difficulties with conventional ESPI systems are minimized using HOEs. The time-average ESPI subtraction method is used to generate the fringe pattern and remove background speckle noise by introducing a phase shift between consecutive images. The amplitude and phase maps are obtained using path-difference modulation.

© 2010 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry

ToC Category:
Holography

History
Original Manuscript: July 20, 2010
Revised Manuscript: September 6, 2010
Manuscript Accepted: September 8, 2010
Published: September 28, 2010

Citation
Viswanath Bavigadda, Raghavendra Jallapuram, Emilia Mihaylova, and Vincent Toal, "Electronic speckle-pattern interferometer using holographic optical elements for vibration measurements," Opt. Lett. 35, 3273-3275 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-19-3273

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