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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 12, Iss. 8 — Aug. 1, 2014
  • pp: 082401–

Experimental study of unidirectional excitation of SPPs by binary area-coded nanohole arrays

Oubo You, Benfeng Bai, and Xiaowei Li  »View Author Affiliations


Chinese Optics Letters, Vol. 12, Issue 8, pp. 082401- (2014)


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Abstract

We present an experimental study on a unidirectional surface plasmon polariton (SPP) launcher based on a compact binary area-coded nanohole array, where the symmetry breaking is realized via effective-index modulation in the binary pattern of the gold film, thus avoiding the challenge of modulating nanostructure in its depth. It is shown that SPPs can be unidirectionally and effectively excited at normal incidence. The SPP intensity and asymmetric excitation ratio, which are two key figure-of-merits of SPP launchers, can be improved by increasing the number of array rows. The proposed device is compatible with most mature top-town nanofabrication techniques and thus is perspective for low-cost mass production.

© 2014 Chinese Optics Letters

OCIS Codes
(230.0230) Optical devices : Optical devices
(240.0240) Optics at surfaces : Optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

Citation
Oubo You, Benfeng Bai, and Xiaowei Li, "Experimental study of unidirectional excitation of SPPs by binary area-coded nanohole arrays," Chin. Opt. Lett. 12, 082401- (2014)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-12-8-082401

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