Collective Effects in Second-Harmonic Generation from Split-Ring-Resonator Arrays

Institute of Nanotechnology, Institute of Applied Physics, and DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany and Physikalisches Institut, University of Bonn, 53115 Bonn, Germany.
Physical Review Letters (Impact Factor: 7.51). 07/2012; 109(1):015502. DOI: 10.1103/PhysRevLett.109.015502
Source: PubMed


Optical experiments on second-harmonic generation from split-ring-resonator square arrays show a nonmonotonic dependence of the conversion efficiency on the lattice constant. This finding is interpreted in terms of a competition between dilution effects and linewidth or near-field changes due to interactions among the individual elements in the array.

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