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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 13 — Jun. 21, 2010
  • pp: 13836–13841

Measuring optical vortices in a speckle pattern using a multi-pinhole interferometer

Gregorius C. G. Berkhout and Marco W. Beijersbergen  »View Author Affiliations

Optics Express, Vol. 18, Issue 13, pp. 13836-13841 (2010)

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We show that it is possible to find and characterise optical vortices in a speckle pattern using a multi-pinhole interferometer. This measurement does not require an additional flat wave front to interfere with the speckle, providing great experimental ease. In addition, a multi-pinhole interferometer can be made arbitrarily large and can therefore be adjusted to the expected speckle size. We present experimental results confirming our understanding.

© 2010 OSA

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(050.1220) Diffraction and gratings : Apertures
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Diffraction and Gratings

Original Manuscript: April 22, 2010
Revised Manuscript: June 4, 2010
Manuscript Accepted: June 8, 2010
Published: June 11, 2010

Gregorius C. G. Berkhout and Marco W. Beijersbergen, "Measuring optical vortices in a speckle pattern using a multi-pinhole interferometer," Opt. Express 18, 13836-13841 (2010)

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