Three-dimensional winged nanocone optical antennas.
Opt Lett
; 39(12): 3686-9, 2014 Jun 15.
Article
em En
| MEDLINE
| ID: mdl-24978568
ABSTRACT
We introduce 3D optical antennas based on winged nanocones. The antennas support particle plasmon oscillations with current distributions that facilitate transformation of transverse far-field radiation to strong longitudinal local fields near the cone apices. We characterize the optical responses of the antennas by their extinction spectra and by second-harmonic generation microscopy with cylindrical vector beams. The results demonstrate a new 3D polarization-controllable optical antenna for applications in apertureless near-field microscopy, spectroscopy, and plasmonic sensing.
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MEDLINE
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En
Ano de publicação:
2014
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Article