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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 12 — Jun. 12, 2006
  • pp: 5657–5663

Investigation of enhanced and suppressed optical transmission through a cupped surface metallic grating structure

Changjun Min, Xiaojin Jiao, Pei Wang, and Hai Ming  »View Author Affiliations

Optics Express, Vol. 14, Issue 12, pp. 5657-5663 (2006)

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Two-dimensional finite-difference time-domain (FDTD) method has been performed to numerically investigate the transmission through a one-dimension cupped surface metallic grating structure. The concept of coupling of optical modes in the notches and main slits, introduced by Crouse and Keshavareddy [1], is examined further in our work. Unexpected phenomenon is shown that even horizontal surface plasmons (HSPs) are inhibited, the transmission still can be enhanced or suppressed. And the periodicity of transmission depending on the phase change of the light striking on the grating surface is discovered. A hybrid optical mode combined by cavity mode and diffracted evanescent wave mode [2] is introduced to analyze the phenomenon.

© 2006 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

Original Manuscript: April 7, 2006
Revised Manuscript: May 17, 2006
Manuscript Accepted: May 26, 2006
Published: June 12, 2006

Changjun Min, Xiaojin Jiao, Pei Wang, and Hai Ming, "Investigation of enhanced and suppressed optical transmission through a cupped surface metallic grating structure," Opt. Express 14, 5657-5663 (2006)

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