We describe the picosecond nonlinear optical response of a metal-dielectric composite made by implanting Cu ions in fused silica. The implanted Cu ions aggregate during implantation to form nanometer-diameter clusters in a dense, thin (~150 nm) layer just beneath the surface of the substrate. The third-order susceptibility X(3) has an electronic component with a magnitude of the order of 10-8 esu and is enhanced for laser wavelengths near the surface plasmon resonance of the copper colloids.
© 1993 Optical Society of America
R. F. Haglund, Jr., L. Yang, R. H. Magruder III, J. E. Wittig, K. Becker, and R. A. Zuhr, "Picosecond nonlinear optical response of a Cu:silica nanocluster composite," Opt. Lett. 18, 373-375 (1993)