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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 13 — Jun. 21, 2010
  • pp: 13580–13585

Plasmonic nanofocusing using a metal-coated axicon prism

Keisuke Kato, Atsushi Ono, Wataru Inami, and Yoshimasa Kawata  »View Author Affiliations

Optics Express, Vol. 18, Issue 13, pp. 13580-13585 (2010)

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We propose an excitation method for the localization of photons at the apex of a metal coated axicon prism. The cone angle of the prism and the metallic film thickness are designed to match the excitation conditions for surface plasmons. The plasmons propagate along the sides of the prism and converge at its apex. The resulting nanofocusing was investigated by simulating the intensity distributions around the apex of the prism using a finite-difference time-domain algorithm. For incident radial polarization, a localized and field enhanced spot is generated by the constructive interference of surface plasmons.

© 2010 OSA

OCIS Codes
(230.5440) Optical devices : Polarization-selective devices
(240.6680) Optics at surfaces : Surface plasmons
(180.4243) Microscopy : Near-field microscopy
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optics at Surfaces

Original Manuscript: April 28, 2010
Revised Manuscript: June 3, 2010
Manuscript Accepted: June 4, 2010
Published: June 9, 2010

Virtual Issues
Vol. 5, Iss. 11 Virtual Journal for Biomedical Optics

Keisuke Kato, Atsushi Ono, Wataru Inami, and Yoshimasa Kawata, "Plasmonic nanofocusing using a metal-coated axicon prism," Opt. Express 18, 13580-13585 (2010)

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