Hybridized nanocavities as single-polarized plasmonic antennas.
We experimentally demonstrate that hybridized nanocavities in optically thick metal films radiate in coherence, and act as an efficient single-polarized plasmonic nano-antenna array. We employ propagating and localized plasmons to enhance polarization control along one axis, with total suppression of the perpendicular polarization component. The relationship between the near-field and far-field radiation is established through a quasi-static model connecting the individual nano-antenna behavior to the phenomenon of extraordinary light transmission. Hybridized nanocavity antennas, with length scales below the conventional diffraction limit, present opportunities for potential applications in photovoltaics, optoelectronic devices and optical sensors.
Yanik
Ahmet Ali
AA
Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
Adato
Ronen
R
Erramilli
Shyamsunder
S
Altug
Hatice
H
D055590:Electromagnetic Phenomena; D004867:Equipment Design; D008027:Light; D008670:Metals / Q000737:chemistry*; D015233:Models, Statistical; D053758:Nanoparticles / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D012542:Scattering, Radiation; D012825:Silicon; D020349:Surface Plasmon Resonance
D008670:Metals; D012825:Silicon