FIG. 2: Normalized angular distribution of radiated power in S-polarization where the detector is scanned perpendicular to the plane of polarization of the incident light. Experimental data are shown in circles. The thick line corresponds to the present quasi-multipole model, the thin line to the 2-dipole model. The experimental data (aperture radius a = 30 nm, light wavelength λ = 633 nm) are taken from Refs. 2,3. FIG. 3: Same as Fig. 2 but for the P-polarization where the incident electric field is parallel to the analysis plane. 8