Azimuthal backflow in light carrying orbital angular momentum (IMAGE)
Caption
The superposition of two light beams with different amplitudes carrying only negative orbital angular momentum (OAM) gives rise to a locally positive OAM in the dark regions. This counterintuitive effect is termed 'azimuthal backflow'. (Artwork credits: Anat Daniel, Faculty of Physics, University of Warsaw)
Credit
Anat Daniel, Faculty of Physics, University of Warsaw
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