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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 16 — Aug. 15, 2011
  • pp: 3287–3289

Phase singularity of surface plasmon polaritons generated by optical vortices

P. S. Tan, G. H. Yuan, Q. Wang, N. Zhang, D. H. Zhang, and X.-C. Yuan  »View Author Affiliations


Optics Letters, Vol. 36, Issue 16, pp. 3287-3289 (2011)
http://dx.doi.org/10.1364/OL.36.003287


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Abstract

We demonstrate an experimental result that shows the phase singularity of surface plasmon waves generated by the direct transform of optical vortices at normal incidence focused on a structureless metal surface. The near-field two-dimensional intensity distribution near the focal plane is experimentally examined by using near-field scanning optical microscopy and shows a good agreement with the finite-difference time-domain simulation result. The experimental realization demonstrates a potential of the proposed excitation scheme to be reconfigured locally with advantages over structures milled into optically thick metallic films for plasmonics applications involving plasmonic vortices.

© 2011 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.3160) Physical optics : Interference
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Diffraction and Gratings

History
Original Manuscript: May 3, 2011
Manuscript Accepted: July 27, 2011
Published: August 15, 2011

Citation
P. S. Tan, G. H. Yuan, Q. Wang, N. Zhang, D. H. Zhang, and X.-C. Yuan, "Phase singularity of surface plasmon polaritons generated by optical vortices," Opt. Lett. 36, 3287-3289 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-16-3287

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