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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 16 — Aug. 3, 2009
  • pp: 13995–14000

A theoretical re-examination of giant transmission of light through a metallic nano-slit surrounded with periodic grooves

Yanxia Cui and Sailing He  »View Author Affiliations


Optics Express, Vol. 17, Issue 16, pp. 13995-14000 (2009)
http://dx.doi.org/10.1364/OE.17.013995


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Abstract

We show that the slit-to-groove distance for a maximal transmission through the nano-slit surrounded with periodic grooves cannot be predicted by the theory of constructive interference between the groove-generated surface plasmon wave (SPW) and the incident wave. A clear physical explanation is given for the dependence of the transmission on the slit-to-groove distance. It is shown that the influence to the transmission comes from three parts: the groove-generated SPW, the incident wave and the nano-slit-generated SPW. The groove-generated SPW is the main factor determining the local field distribution around the nano-slit opening. The influence of the incident wave is very weak when strong SPW is generated on the input surface by many periods of deep grooves. The nano-slit-generated SPW can also be considered as a disturbance to the light distribution on the input surface.

© 2009 OSA

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Diffraction and Gratings

History
Original Manuscript: July 7, 2009
Revised Manuscript: July 22, 2009
Manuscript Accepted: July 24, 2009
Published: August 3, 2009

Citation
Yanxia Cui and Sailing He, "A theoretical re-examination of giant transmission of light through a metallic nano-slit surrounded with periodic grooves," Opt. Express 17, 13995-14000 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-16-13995


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References

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