Modeling of Optical Nanoantennas

Figure 7

Near-field intensity distribution (a) around a triangular bowtie gold nanoantenna near the resonance wavelength (1363 nm) and (b) local field intensity enhancement in the middle of the gap with L = 240 nm, gap of 20 nm, tip radius 20 nm, flare angle 30°, and 𝑛_𝑆=1.46.

(a)

(b)