Picosecond nonlinear optical response of a Cu:silica nanocluster composite
Richard F. HaglundDepartment of Physics and Astronomy and Free-Electron Laser Center for Biomedical and Materials Research, Vanderbilt University, Nashville, Tennessee 37235R.H. MagruderDepartment of Materials Science and Engineering, Vanderbilt University, Nashville, Tennessee 37235Klaus BeckerFree-Electron Laser Center for Biomedical and Materials Research, Vanderbilt University, Nashville, Tennessee 37235R.A. ZuhrSolid-State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831J.E. WittigDepartment of Materials Science and Engineering, Vanderbilt University, Nashville, Tennessee 37235Li YangDepartment of Physics and Astronomy and Free-Electron Laser Center for Biomedical and Materials Research, Vanderbilt University, Nashville, Tennessee 37235
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Аннотация
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.
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