Degenerate four-wave mixing in colloidal gold as a function of particle size
Mark J. BloemerU.S. Army Missile Command, AMSMI-RD-RE-OP, Redstone Arsenal, Alabama 35898-5248 USAJoseph W. HausDepartment of Physics, Rensselaer Polytechnic Institute, Troy, New York 12180-3590 USAPaul AshleyU.S. Army Missile Command, AMSMI-RD-RE-OP, Redstone Arsenal, Alabama 35898-5248 USA
1990en
ABI
Annotatsiya
The conjugate reflectivity of colloidal gold has been measured for four samples containing particles with mean sizes of 5, 10, 15, and 30 nm. The response times of the samples indicate a size dependence, but the conjugate signal strength was found to be only weakly dependent on particle size. Calculations of the local-field enhancement in the host matrix by the effective-medium theory indicate that the nonlinearity is inherent in the gold particles.
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