Nonlinear responses in optical metamaterials: theory and experiment

Shiwei Tang, David J. Cho, Hao Xu, Wei Wu, Y. Ron Shen, Lei Zhou
2011 Optics Express  
We employed both theoretical calculations and experiments to study the nonlinear responses in optical metamaterials. The spectra of second-harmonic generations measured on a fishnet metamaterial are in quantitative agreements with calculations based on full-wave numerical simulations combined with field integrations, both exhibiting ~80 times enhancements at the magnetic resonance frequency. Our calculations explained several interesting features observed experimentally, and suggested an
more » ... suggested an optimal metamaterial structure to yield the strongest nonlinear signals.
doi:10.1364/oe.19.018283 pmid:21935195 fatcat:huktrwpc4fcczlkwomu6r3adhu