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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 19 — Oct. 1, 2013
  • pp: 3776–3779

Highly efficient nanofocusing in a single step-like microslit

Gang Wu, Jianjun Chen, Ru Zhang, Jinghua Xiao, and Qihuang Gong  »View Author Affiliations


Optics Letters, Vol. 38, Issue 19, pp. 3776-3779 (2013)
http://dx.doi.org/10.1364/OL.38.003776


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Abstract

Highly efficient plasmonic nanofocusing is numerically predicted in a single step-like microslit, which is placed on a high-index dielectric layer. Because of the high throughput of the impinging light on the wide microslit, highly efficient nanofocusing is achieved in the proposed structure based on the multimode interferences in the microslits, the constructive interference between the transmitted light and the scattered surface plasmon polaritons, and the Fabry–Perot resonator effect in the high-index dielectric layer. Compared with previous nanofocusing structures containing plenty of substructures arranged laterally, the proposed structure has a much smaller lateral dimension because of the vertical arrangement of the microslits. This is of importance for realizing densely integrated plasmonic circuits.

© 2013 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.3160) Physical optics : Interference
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optoelectronics

History
Original Manuscript: July 25, 2013
Revised Manuscript: August 31, 2013
Manuscript Accepted: August 31, 2013
Published: September 19, 2013

Citation
Gang Wu, Jianjun Chen, Ru Zhang, Jinghua Xiao, and Qihuang Gong, "Highly efficient nanofocusing in a single step-like microslit," Opt. Lett. 38, 3776-3779 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-19-3776

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