Journal
PHYSICAL REVIEW LETTERS
Volume 110, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.093902
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- Academy of Finland [132438]
- Graduate School of Tampere University of Technology
- Academy of Finland (AKA) [132438, 132438] Funding Source: Academy of Finland (AKA)
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We prepare arrays of gold nanoparticles that include both noncentrosymmetric particles with a second-order nonlinear optical response (active particles) and centrosymmetric particles with no second-order response (passive particles). The plasmon resonances of the active and passive particles are at distinct wavelengths, yet the passive particles modify the electromagnetic modes of the structure in such a way that second-harmonic generation from the active particles is enhanced. Our results provide a completely new concept for optimizing the nonlinear responses of metamaterials. DOI: 10.1103/PhysRevLett.110.093902
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