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First direct measurement of the spatial coherence of sunlight |
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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