Second-order Lau effect with pseudo-thermal light

Lau effect is a self-imaging formed in the far field of a pair of gratings illuminated by spatially incoherent light. We report the experimental demonstration of the second-order Lau effect with incoherently pseudo-thermal light. Spatially periodic structures were nonlocally superposed giving rise t...

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Bibliographic Details
Published in:Optics communications 2013-11, Vol.309, p.298-301
Main Authors: Xu, De-Qin, Song, Xin-Bing, Li, Hong-Guo, Zhang, De-Jian, Zhao, Jiao-Jiao, Wang, Hai-Bo, Xiong, Jun, Wang, Kaige
Format: Article
Language:English
Subjects:
Buckets
Correlation analysis
Diffraction gratings
Far fields
Gratings (spectra)
Illumination
Intensity correlation measurement
Interference
Lau effect
Periodic structures
Pseudo-thermal light
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Summary:Lau effect is a self-imaging formed in the far field of a pair of gratings illuminated by spatially incoherent light. We report the experimental demonstration of the second-order Lau effect with incoherently pseudo-thermal light. Spatially periodic structures were nonlocally superposed giving rise to interference patterns in intensity correlation measurement. The experimental results are in agreement with the theoretical analysis. The second-order Lau effect can be well understood by the unfolded version of the experimental setup where the bucket detection can be thought as the incoherent illumination in classical Lau effect.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2013.08.013