Tuning the polarization states of optical spots at the nanoscale on the Poincaré sphere using a plasmonic nanoantenna |
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Authors: | E Ö?üt K ?endur |
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Institution: | 1.Sabanc? University,Istanbul,Turkey |
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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. |
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Keywords: | |
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