Abstract

The optical nonlinearity of an aqueous colloid containing silver nanoparticles (NPs) was investigated using the Z-scan technique. Values for the third-, fifth-, seventh-, and ninth-order susceptibilities were obtained, and their dependence with the volume fraction occupied by the NPs was determined. The experiments were performed with intensities between 0.1 and 1.5GWcm2 using a laser at 532nm that delivers single 80ps pulses at a low repetition rate.

© 2007 Optical Society of America

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