Exceptional second-order chiral responses from arrays of L-shaped gold nanoparticles are observed. Second-harmonic circular difference and susceptibility tensor measurements imply that it is primarily small-scale defects that break the symmetry and render the samples chiral.
© 2005 Optical Society of America
B. K. Canfield, S. Kujala, K. Laiho, K. Jefimovs, J. Turunen, and M. Kauranen, "Second-Order Chiral Responses from Gold Nanoparticles," in Frontiers in Optics, OSA Technical Digest Series (Optical Society of America, 2005), paper FME7.
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