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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 36, Iss. 13 — Jul. 1, 2011
  • pp: 2498–2500

Plasmonic wave plate based on subwavelength nanoslits

Eng Huat Khoo, Er Ping Li, and Kenneth B. Crozier  »View Author Affiliations

Optics Letters, Vol. 36, Issue 13, pp. 2498-2500 (2011)

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We propose a quarter-wave plate based on nanoslits and analyze it using a semianalytical theory and simulations. The device comprises two nanoslits arranged perpendicular to one another where the phases of the fields transmitted by the nanoslits differ by λ / 4 . In this way, the polarization state of the incident light can be changed from linear to circular or vice versa. The plasmonic nanoslit wave plate is thin and has a subwavelength lateral extent. We show that the predictions for the phase shift obtained from a semianalytical model are in very good agreement with simulations by the finite difference time domain method.

© 2011 Optical Society of America

OCIS Codes
(240.5420) Optics at surfaces : Polaritons
(260.5430) Physical optics : Polarization
(250.5403) Optoelectronics : Plasmonics
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Optics at Surfaces

Original Manuscript: January 26, 2011
Revised Manuscript: June 7, 2011
Manuscript Accepted: June 8, 2011
Published: June 24, 2011

Eng Huat Khoo, Er Ping Li, and Kenneth B. Crozier, "Plasmonic wave plate based on subwavelength nanoslits," Opt. Lett. 36, 2498-2500 (2011)

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