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Paper detail

Spatial Coherence and Optical Beam Shifts

A beam of light, reflected at a planar interface, does not follow perfectly the ray optics prediction. Diffractive corrections lead to beam shifts; either the reflected beam is displaced (spatial shift) and/or travels in a different direction (angular shift), as compared to geometric optics. How does the degree of spatial coherence of light influence these shifts? Theoretically, this has turned out to be a controversial issue. Here we resolve the controversy experimentally; we show that the degree of spatial coherence influences the angular beam shifts, while the spatial beam shifts are unaffected.

preprint2012arXivOpen access
W. LöfflerAndrea AielloJ. P. Woerdman
physics.optics
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W. LöfflerAndrea AielloJ. P. Woerdman

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