Fig. 4: Spinning Janus dipole. | Light: Science & Applications

Fig. 4: Spinning Janus dipole.

From: Experimental demonstration of linear and spinning Janus dipoles for polarisation- and wavelength-selective near-field coupling

Fig. 4

Measured (a) and calculated (b) BFP intensities of the p- and s- polarised scattering from a spinning Janus dipole. The experimental and theoretical distributions are normalised to their common maximum value. The retrieved experimental dipole moments are p = (0.61−0.11i,−0.01−0.75i,0) and m/c = (−1,0.30 + 0.84i,0), while the theoretical dipole moments are p = 0.75(1,−i,0) and m/c = (−1,i,0). The slight asymmetry in the experimental results is attributed to the experimental dipole moments not matching exactly the ideal ones for which the spinning Janus dipole is cylindrically symmetric

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