Fig. 6From: Polarization-Dependent Quasi-Far-Field Superfocusing Strategy of Nanoring-Based Plasmonic LensesIntensity distribution patterns of |E z |2 and |E r |2 in r-z plane in the case of circularly polarized light. a In |E z |2, the FWHM, DOF, and focal length is ~0.32 λ 0, ~1.65 λ 0, and 1185 nm, respectively. b In |E r |2, the FWHM, DOF, and focal length is ~0.45 λ 0, ~1.68 λ 0, and 1405 nm, respectivelyBack to article page