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Spatial Coherence and Optical Beam Shifts

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Aiello,  Andrea
Optical Quantum Information Theory, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Loffler, W., Aiello, A., & Woerdman, J. P. (2012). Spatial Coherence and Optical Beam Shifts. PHYSICAL REVIEW LETTERS, 109(21): 213901. doi:10.1103/PhysRevLett.109.213901.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-685B-8
Abstract
A beam of light, reflected at a planar interface, does not follow perfectly the ray optics prediction. Diffractive corrections lead to beam shifts; the reflected beam is displaced (spatial Goos-Hanchen type shifts) and/or travels in a different direction (angular Imbert-Fedorov type shifts), as compared to geometric optics. How does the degree of spatial coherence of light influence these shifts? We investigate this issue first experimentally and find that the degree of spatial coherence influences the angular beam shifts, while the spatial beam shifts are unaffected.