Figure 1: Experimental observation of dipole-like radiation pattern.

(a) Top views of the sample fabricated by patterning periodical HR on both sides and a single slit at the centre. Scale bar, 4 cm. (b) Experimental and (c) simulated results of intensity patterns of a plane wave passing decorated sample. (d) Experimental and (e) simulated results of intensity patterns of a plane wave passing undecorated sample. (f,g) Simulated intensity patterns for dipole and monopole. The upper half-plane is tagged by the dashed green box for comparison.