Abstract
Both linear and nonlinear optical properties of metal nanoparticles strongly depend on their particle sizes. Sizedependent surface plasmon resonant absorption of gold nanoparticles was theoretically accessed using Mie scattering theory based on empirical optical absorption and TEM measurements, which allows to estimate the average size of gold nanoparticles with simple absorption measurement. The nonlinear optical properties of the gold nanoparticles were studied with Z-scan and forward degenerate four-wave mixing techniques.
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