ORDER NONLINEAR OPTICAL PROPERTIES OF Au:SiO2 NANOCOMPOSITE FILMS WITH VARYING Au PARTICLES SIZE
نویسندگان
چکیده
In this study, dependence of the 3rd order nonlinear coefficients on the size of the Au nanoparticles in the Au:SiO2 composite films together with on the wavelength have been examined experimentally. Composite films with various size of the metal nano-particles at constant Au volume fraction were fabricated by the use of alternating deposition technique using a multitarget RF magnetron sputtering at 300 C. The composite films of about 600nm thickness were prepared on fused silica substrates with varying nominal thickness of Au layer, h=0.5, 1.0, 1.5 and 2.0 nm. The Au volume fraction, p, was adjusted at 1% by controlling the ratio of the norminal thickness of metal layer to that of the matrix layer.
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