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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 22 — Nov. 1, 2004
  • pp: 5418–5423

Linear and nonlinear optical responses influenced by broken symmetry in an array of gold nanoparticles

Brian K. Canfield, Sami Kujala, Konstantins Jefimovs, Jari Turunen, and Martti Kauranen  »View Author Affiliations


Optics Express, Vol. 12, Issue 22, pp. 5418-5423 (2004)
http://dx.doi.org/10.1364/OPEX.12.005418


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Abstract

An array of low-symmetry, L-shaped gold nanoparticles is shown to exhibit high sensitivity to the state of incident polarization. Small imperfections in the shape of the actual particles, including asymmetric arm lengths and edge distortions, break the symmetry attributed to an ideal particle. This broken symmetry leads to a large angular displacement of the extinction axes from their expected locations. More significantly, second-harmonic generation experiments reveal significant second-order susceptibility tensor components forbidden to the ideal symmetry.

© 2004 Optical Society of America

OCIS Codes
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(260.3910) Physical optics : Metal optics
(260.5430) Physical optics : Polarization

ToC Category:
Research Papers

History
Original Manuscript: October 1, 2004
Revised Manuscript: October 19, 2004
Published: November 1, 2004

Citation
Brian Canfield, Sami Kujala, Konstantins Jefimovs, Jari Turunen, and Martti Kauranen, "Linear and nonlinear optical responses influenced by broken symmetry in an array of gold nanoparticles," Opt. Express 12, 5418-5423 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-22-5418


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