Fig. 5.

Antenna-enhanced spontaneous emission from InGaAsP nanorods. (A) Schematic cutaway view of an arch-antenna–coupled InGaAsP nanorod, isolated by TiO₂, and embedded in epoxy. (B) Perspective SEM of antenna-coupled nanorod before substrate removal. (C) Current density of the arch-antenna electromagnetic mode showing the antiparallel current in the arch compared with the arms of the antenna. (D) Optical emission polarized in the unenhanced y direction for bare nanorod (blue) and antenna-coupled nanorod (green). (Inset) Top–down SEM image of antenna-coupled and bare nanorod. (E) Optical emission polarized in the enhanced x direction for a bare nanorod (blue) and from nanorods coupled to different antenna lengths: 400 nm (green), 600 nm (purple), and 800 nm (red) in length.