Large third-order optical nonlinearity in Au:SiO2 composite films near the percolation threshold

Liao, H. B.; Sheng, Ping; Wong, G. K. L.; Yu, P.; Fu, J S; Xiao, R. F.

doi:10.1063/1.119291

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Large third-order optical nonlinearity in Au:SiO2 composite films near the percolation threshold

Author(s): H. B. Liao , R. F. Xiao , J. S. Fu , P. Yu , G. K. L. Wong , Ping Sheng

Publication date Created: January 06 1997

Publication date (Print): January 06 1997

Journal: Applied Physics Letters

Publisher: AIP Publishing

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Surface-mediated enhancement of optical phase conjugation in metal colloids.

Mark Ricard, C Flytzanis, P Roussignol (1985)

We show that the optical phase-conjugated reflectivity from silver and gold colloids is enhanced by several orders of magnitude. The reflectivity on resonance is comparable with that of CS(2) for metal-particle volume concentration of a few parts in 10(6). We trace this enhancement to the nonlinearities of the electrons in the metal particles and extract the value of their optical Kerr-effect coefficient.