Abstract
Nanoscale gradients in the material properties and local fields may enable magnetic dipoles, electric quadrupoles, and higher multipoles to contribute to the (nonlinear) optical responses of metal nanoparticles. However, the precise role of multipolar orders in the nonlinear responses of nanostructures is not well-understood. Until recently only a few experimental studies concerning the role of multipole contributions to the nonlinear response due to incoherent hyper-Rayleigh scattering [1] have been performed.
© 2007 IEEE
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