Absorption by an Optical Dipole Antenna in a Structured Environment
Figure 3
(a) map of the normalized LDOS , with and the LDOS in vacuum, versus both the wavelength and the distance between the mirror and the center of the nanoparticle. The vertical dashed line is a guide to precise the wavelength at which panel (b) has been plotted. (b) distance dependence of the LDOS (red solid line) and of the partial LDOS (blue and black dashed lines) defined by with for . The partial LDOS drives the dynamics of a dipole oriented along direction , while the LDOS sums up the contributions of the three orientations. Due to symmetry in the geometry in Figure 2, the partial LDOS along and is equal. In all calculations, the minimum distance has been chosen at the limit of validity of the dipole approximation [17].
