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Circularly polarized unidirectional emission via a coupled plasmonic spiral antenna |
Optics Letters, Vol. 36, Issue 23, pp. 4533-4535 (2011)
http://dx.doi.org/10.1364/OL.36.004533
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Abstract
In this Letter, we study the emission properties of an electric dipole emitter coupled to a plasmonic spiral structure. The plasmonic spiral structure functions as an optical antenna, coupling the electric dipole emission into circularly polarized unidirectional emission in the far field. Increasing number of turns of the spiral leads to narrower angular width of the emission pattern in the far field. For a spiral antenna with six turns, antenna directivity of
© 2011 Optical Society of America
OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.5430) Physical optics : Polarization
(350.5610) Other areas of optics : Radiation
ToC Category:
Optics at Surfaces
History
Original Manuscript: September 8, 2011
Revised Manuscript: October 20, 2011
Manuscript Accepted: October 21, 2011
Published: November 23, 2011
Citation
Guanghao Rui, Robert L. Nelson, and Qiwen Zhan, "Circularly polarized unidirectional emission via a coupled plasmonic spiral antenna," Opt. Lett. 36, 4533-4535 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-23-4533
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