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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 8 — Apr. 11, 2011
  • pp: 7274–7279

Electric field enhancements around the nanorod on the base layer

Zhongyue Zhang, Zhidong Zhang, Lijie Zhang, Chengzhi Huang, and Zuhong Xiong  »View Author Affiliations

Optics Express, Vol. 19, Issue 8, pp. 7274-7279 (2011)

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Electric field (E field) distributions of the silver rod-film nanostructures are calculated by the finite difference time domain method and compared with those of the individual nanorods. For the rod-film nanostructure, the incident waves are reflected back by the base layer and the superposition of the E fields of the incident wave and the reflection wave works as the excitation for the transverse mode electron oscillations in the nanorod, which results in the much enhanced E fields around the lateral surface of the nanorod. In addition, we investigate how the structural parameters of the rod-film nanostructure affect the E fields along the nanorod. These results would be much helpful for designing larger intensity surface enhanced Raman scattering substrates.

© 2011 OSA

OCIS Codes
(160.4760) Materials : Optical properties
(240.6680) Optics at surfaces : Surface plasmons
(260.5740) Physical optics : Resonance

ToC Category:
Optics at Surfaces

Original Manuscript: March 8, 2011
Revised Manuscript: March 23, 2011
Manuscript Accepted: March 24, 2011
Published: March 31, 2011

Zhongyue Zhang, Zhidong Zhang, Lijie Zhang, Chengzhi Huang, and Zuhong Xiong, "Electric field enhancements around the nanorod on the base layer," Opt. Express 19, 7274-7279 (2011)

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