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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 6 — Mar. 15, 2007
  • pp: 629–631

Near-field Moiré effect mediated by surface plasmon polariton excitation

Zhaowei Liu, Stéphane Durant, Hyesog Lee, Yi Xiong, Yuri Pikus, Cheng Sun, and Xiang Zhang  »View Author Affiliations

Optics Letters, Vol. 32, Issue 6, pp. 629-631 (2007)

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We have demonstrated a surface plasmon polariton mediated optical Moiré effect by inserting a silver slab between two subwavelength gratings. Enhancement of the evanescent fields by the surface plasmon excitations on the silver slab leads to a remarkable contrast improvement in the Moiré fringes from two subwavelength gratings. Numerical calculations, which agree very well with the experimental observation of evanescent-wave Moiré fringes, elucidate the crucial role of the surface plasmon polaritons. The near-field Moiré effect has potential applications to extend the existing Moiré techniques to subwavelength characterization of nanostructures.

© 2007 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: October 9, 2006
Revised Manuscript: November 20, 2006
Manuscript Accepted: December 18, 2006
Published: February 15, 2007

Zhaowei Liu, Stéphane Durant, Hyesog Lee, Yi Xiong, Yuri Pikus, Cheng Sun, and Xiang Zhang, "Near-field Moiré effect mediated by surface plasmon polariton excitation," Opt. Lett. 32, 629-631 (2007)

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