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- Title
Tuning the polarization states of optical spots at the nanoscale on the Poincaré sphere using a plasmonic nanoantenna.
- Authors
Öğüt, E.; Şendur, K.
- Abstract
It is shown that the polarization states of optical spots at the nanoscale can be manipulated to various points on the Poincaré sphere using a plasmonic nanoantenna. Linearly, circularly, and elliptically polarized near-field optical spots at the nanoscale are achieved with various polarization states on the Poincaré sphere using a plasmonic nanoantenna. A novel plasmonic nanoantenna is illuminated with diffraction-limited linearly polarized light. It is demonstrated that the plasmonic resonances of perpendicular and longitudinal components of the nanoantenna and the angle of incident polarization can be tuned to obtain optical spots beyond the diffraction limit with a desired polarization and handedness.
- Subjects
POLARIZATION (Nuclear physics); ANTENNAS (Electronics); NANOELECTRONICS; SURFACE plasmon resonance; OPTICAL diffraction; PARTICLES (Nuclear physics)
- Publication
Applied Physics A: Materials Science & Processing, 2011, Vol 103, Issue 3, p855
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-010-6228-5