Figure 2: Polarimetric spectral measurements.
Linear polarization degree at right-angle scattering configuration PL (90°) and scattered intensities from simulations and experiments at 90° for a sphere dimer as a function of the size parameter q. The exciting radiation is linearly polarized and the electric field is either perpendicular (IS) or parallel (IP) to the scattering plane (see Fig. 1). (a) Simulation and measurement for d0=2. (b) Simulation and measurement for d0=1/3 (MD=Magnetic dipole resonance, ED=Electric dipole resonance). Simulated PL (solid blue line) and measured PL (dash-dotted blue line). Simulated IS (solid red line) and measured IS (dashed red line). Simulated IP (solid black line) and measured IP (dash-dotted black line). The low(off)/high(on) states are indicated with 0/1 and the black arrows. (c,d) are zoomed details for IS of plots (a,b) respectively to show how the natural magnetic resonance (marked with an arrow in c) evolves to a Fano-like shape (marked with an arrow in d) as the interaction between the components of the dimer increases.
