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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 20 — Oct. 15, 2012
  • pp: 4233–4235

Plasmon-mediated vectorial topological dipole: formation and annihilation

Shankar Pidishety, Vijay Kumar, and Nirmal K. Viswanathan  »View Author Affiliations


Optics Letters, Vol. 37, Issue 20, pp. 4233-4235 (2012)
http://dx.doi.org/10.1364/OL.37.004233


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Abstract

We report the formation and annihilation of vectorial topological dipole mediated by plasmons in structure-free metal surfaces using a polarization singular optical beam. The measured far-field behavior is due to the strong angular and polarization dependence of the reflection coefficient and the phase shift experienced by the spatially inhomogeneous polarized beam around the plasmon resonance. The threshold polarization ellipticity (σth) anticipated for the dipole formation is experimentally verified.

© 2012 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.5430) Physical optics : Polarization
(260.6042) Physical optics : Singular optics

ToC Category:
Optics at Surfaces

History
Original Manuscript: July 26, 2012
Manuscript Accepted: August 31, 2012
Published: October 5, 2012

Citation
Shankar Pidishety, Vijay Kumar, and Nirmal K. Viswanathan, "Plasmon-mediated vectorial topological dipole: formation and annihilation," Opt. Lett. 37, 4233-4235 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-20-4233


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