Figure 4

Cross-sectional time averaged emission profile of circular aperture metallic lens for silicon at 400 and 700 nm.

Graphs (1), (2) and (3), (4) have been plotted on same length Y scale respectively. (a)(1) and (b)(1) represent the distribution of |E_x|² at 400 nm and 700 nm. (a)(2) and (b)(2) represent the distribution of |E_z| at 400 nm and 700 nm.(a)(3) and (a)(4) represent the zoomed images for |E_x|² and |E_z|² at 400 nm respectively, while (b)(3) and (b)(4) represent the same at 700 nm. The spatial positions of silicon and quartz substrate are same in (3) and (4) for both (a) and (b). The color scale for figure (a)(4) and (b)(4) are on logarithmic scales.