Investigation of the nonlinear optical characteristics of composite materials based on sapphire with silver, copper, and gold nanoparticles by the reflection Z-scan method
R. A. GaneevNPO Akadempribor, Academv of Sciences of Uzbekistan, Akademgorodok, Tashkent, 700125, UzbekistanA. I. Ryasnyanskiı̆А. Л. СтепановKazan Scientific CenterT. UsmanovNPO Akadempribor, Academv of Sciences of Uzbekistan, Akademgorodok, Tashkent, 700125, UzbekistanC. MarquesCentro de Física Nuclear da Universidade de Lisboa, 1649-003, Lisbon, PortugalR.C. da SilvaDepartamento de Física, Instituto Tecnológico e Nuclear, 2666-953, Sacavém, PortugalE. AlvesDepartamento de Física, Instituto Tecnológico e Nuclear, 2666-953, Sacavém, Portugal
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The nonlinear optical characteristics of silver, copper, and gold nanoparticles synthesized in a sapphire matrix by ion implantation are studied. The measurements are performed by the RZ-scan method with optical reflection at the radiation wavelength of a picosecond Nd:YAG laser (λ = 1064 nm). The nonlinear refractive indices and the real parts of the third-order nonlinear susceptibility of the composites are determined. It is shown that the nonlinear refraction in the samples is caused by the Kerr effect.
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