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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 15 — Jul. 23, 2007
  • pp: 9575–9583

Effect of surface plasmon resonance on the optical activity of chiral metal nanogratings

K. Konishi, T. Sugimoto, B. Bai, Y. Svirko, and M. Kuwata-Gonokami  »View Author Affiliations


Optics Express, Vol. 15, Issue 15, pp. 9575-9583 (2007)
http://dx.doi.org/10.1364/OE.15.009575


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Abstract

We examine the mechanism responsible for the optical activity of a two-dimensional array of gold nanostructures with no mirror symmetry on a dielectric substrate. Measurements with different incident angles, polarizations and sample orientations allow us to reveal that observed polarization effect is enhanced by surface plasmon resonance. By performing numerical simulation with rigorous diffraction theory we also show that the grating chirality can be described in terms of the non-coplanarity of the electric field vectors at the front (air-metal) and back (substrate-metal) sides of the grating layer.

© 2007 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

History
Original Manuscript: May 7, 2007
Revised Manuscript: June 7, 2007
Manuscript Accepted: July 9, 2007
Published: July 18, 2007

Citation
K. Konishi, T. Sugimoto, B. Bai, Y. Svirko, and M. Kuwata-Gonokami, "Effect of surface plasmon resonance on the optical activity of chiral metal nanogratings," Opt. Express 15, 9575-9583 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-15-9575


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