Absorption by an Optical Dipole Antenna in a Structured Environment

Figure 4

(a) map of the normalized absorption cross-section 𝜎^𝑛_𝑎 versus both the wavelength 𝜆 and the distance 𝑑 between the mirror and the nanosphere. The vertical dashed line is a guide to precise the wavelength at which panel (b) has been plotted. Inset: plot of the absorption cross-section as a function of the wavelength for 𝑑=30nm. (b) plot of 𝜎^𝑛_𝑎 and of the partial LDOS 𝜌_𝑦𝑦(𝐫₀,𝜔) versus the distance 𝑑 for 𝜆=361nm. 𝑠-polarized illumination.

(a)

(b)