Fig. 3
From: Topological links and knots of speckled light mediated by coherence singularities
Experimental demonstration of incoherent links and 3D mapping of coherence singularities. a Experimental results of the beam intensity, and the amplitude and phase of coherence function at a plane z = 100 mm (\({\delta }_{0}=\)1 mm). b Experimental phase structures of the coherence function at various propagation planes reconstructed by using angular spectrum transmission. c Numerical and experimental results of the incoherent links obtained by mapping coherence singularities in 3D plots. The scale bars represent 0.4 mm
