Samenvatting
By directing light, optical antennas can enhance light-matter interaction and improve the efficiency of nanophotonic devices. Here we exploit the interference among the electric dipole, quadrupole, and magnetic dipole moments of a split-ring resonator to experimentally realize a compact directional optical antenna. This single-element antenna design robustly directs emission even when covered with nanometric emitters at random positions, outperforming previously demonstrated nanoantennas with a bandwidth of 200 nm and a directivity of 10.1 dB from a subwavelength structure. The advantages of this approach bring directional optical antennas closer to practical applications.
| Originele taal-2 | Engels |
|---|---|
| Pagina's (van-tot) | 166-171 |
| Aantal pagina's | 6 |
| Tijdschrift | Nano Letters |
| Volume | 14 |
| Nummer van het tijdschrift | 1 |
| DOI's | |
| Status | Gepubliceerd - 8 jan. 2014 |
| Extern gepubliceerd | Ja |