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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 16 — Aug. 15, 2014
  • pp: 4927–4930

Using shadows to measure spatial coherence

James K. Wood, Katelynn A. Sharma, Seongkeun Cho, Thomas G. Brown, and Miguel A. Alonso  »View Author Affiliations

Optics Letters, Vol. 39, Issue 16, pp. 4927-4930 (2014)

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We present a very simple method for measuring the spatial coherence of quasi-monochromatic fields through the comparison of two measurements of the radiant intensity with and without a small obscuration at the test plane. From these measurements one can measure simultaneously the field’s coherence at all pairs of points whose centroid is the centroid of the obstacle. This method can be implemented without the need of any refractive or diffractive focusing elements.

© 2014 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(050.1940) Diffraction and gratings : Diffraction
(050.5080) Diffraction and gratings : Phase shift
(070.2580) Fourier optics and signal processing : Paraxial wave optics

ToC Category:
Coherence and Statistical Optics

Original Manuscript: June 23, 2014
Revised Manuscript: July 16, 2014
Manuscript Accepted: July 16, 2014
Published: August 15, 2014

James K. Wood, Katelynn A. Sharma, Seongkeun Cho, Thomas G. Brown, and Miguel A. Alonso, "Using shadows to measure spatial coherence," Opt. Lett. 39, 4927-4930 (2014)

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