Abstract
Nanophotonics capable of directing radiation or enhancing quantum-emitter transition rates rely on plasmonic nanoantennas. We present here a novel Babinet-inverted magnetic-dipole-fed multislot optical Yagi-Uda antenna that exhibits highly unidirectional radiation to free space, achieved by engineering the relative phase of the interacting surface plasmon polaritons between the slot elements. The unique features of this nanoantenna can be harnessed for realizing energy transfer from one waveguide to another by working as a future "optical via".
Original language | English |
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Pages (from-to) | 3072-3078 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 14 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2014 Jun 11 |
Keywords
- Plasmonic antenna
- Yagi-Uda
- directional radiation
- slot-slot interaction
- surface plasmon
ASJC Scopus subject areas
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering