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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 30, Iss. 6 — Jun. 1, 2013
  • pp: 1113–1118

Superfocusing of surface plasmon polaritons by metal-coated dielectric probe of tilted conical shape

Ngo Thi Thu, Kazuo Tanaka, Masahiro Tanaka, and Dao Ngoc Chien  »View Author Affiliations


JOSA A, Vol. 30, Issue 6, pp. 1113-1118 (2013)
http://dx.doi.org/10.1364/JOSAA.30.001113


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Abstract

By the volume integral equation method, the metal-coated dielectric probes of tilted conical shape were investigated for nanofocusing of surface plasmon polaritons (SPPs). We consider the cases of incident radially polarized (RP) and linearly polarized (LP) Gaussian beams and found that the tilted SPP conical probe is valid for both incident linearly and RP beams. Compared to the other asymmetric structures reported so far that are valid for incident LP waves, the structure proposed in this paper is not only simple but also straightforward to obtain the nanofocused localized and enhanced optical field on the tip of incident LP beam.

© 2013 Optical Society of America

OCIS Codes
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons
(260.2110) Physical optics : Electromagnetic optics

ToC Category:
Optical Devices

History
Original Manuscript: February 22, 2013
Revised Manuscript: April 9, 2013
Manuscript Accepted: April 10, 2013
Published: May 14, 2013

Citation
Ngo Thi Thu, Kazuo Tanaka, Masahiro Tanaka, and Dao Ngoc Chien, "Superfocusing of surface plasmon polaritons by metal-coated dielectric probe of tilted conical shape," J. Opt. Soc. Am. A 30, 1113-1118 (2013)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-30-6-1113

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