Figure 4
From: Giant field enhancement in high-index dielectric subwavelength particles

Images obtained with the help of the exact Mie solution of the two-dimensional problem. Spatial distribution of the intensity of the magnetic field (|H|2), normalized over the corresponding quantity in the incident wave \(({H}_{0}^{2})\), at light scattering by an infinite dielectric cylinder with radius R = 1.8 cm and permittivity ε = 58.29 + 1.15i. The green arrow indicates the direction of propagation of the plane TE polarized incident wave. The upper panel corresponds to the electric dipolar resonance at f = 1.31 GHz (cf. Fig. 2); the lower one shows the off-resonance case at at f = 0.5 GHz. The field within the cylinder is shown in the inserts. The white circle in the inserts designates the cylinder boundary. The color bars have the three different scales: (i) for the field outside the cylinder min = 0.5, max = 2; (ii) for the field in the upper panel insert min = 0, max = 522 (iii) for the field in the lower panel insert min = 0, max = 3.2. Note strong spatial modulations of the backward scattered field outside the cylinder and a deep suppression of the forward scattering at the resonant frequency.