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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 17 — Sep. 1, 2012
  • pp: 3516–3518

First direct measurement of the spatial coherence of sunlight

Heylal Mashaal, Alex Goldstein, Daniel Feuermann, and Jeffrey M. Gordon  »View Author Affiliations


Optics Letters, Vol. 37, Issue 17, pp. 3516-3518 (2012)
http://dx.doi.org/10.1364/OL.37.003516


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Abstract

Direct sunlight is often deemed incoherent, hence unsuitable for antenna power conversion. However, all radiation exhibits spatial coherence when detected on a sufficiently small scale. We report the first direct measurement of the spatial coherence of solar beam radiation, achieved with a customized tabletop cyclic-shearing interferometer. Good agreement is found between experiment and theory, with promising ramifications for solar aperture antennas.

© 2012 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(220.1770) Optical design and fabrication : Concentrators
(350.6050) Other areas of optics : Solar energy

ToC Category:
Coherence and Statistical Optics

History
Original Manuscript: June 25, 2012
Revised Manuscript: July 17, 2012
Manuscript Accepted: July 17, 2012
Published: August 20, 2012

Citation
Heylal Mashaal, Alex Goldstein, Daniel Feuermann, and Jeffrey M. Gordon, "First direct measurement of the spatial coherence of sunlight," Opt. Lett. 37, 3516-3518 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-17-3516


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References

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