Abstract
The Z-scan method is used to study the variation in the nonlinear susceptibility χ(3) (−gw; ω, ω, −ω) and nonlinear refractive index of colloidal silver with the degree of aggregation under the action of picosecond and nanosecond radiation (λ=1064 nm). The values of χ(3) for aggregated silver that are defined by Kerr nonlinearity and thermal self-focusing are found to be −1.5×10−14 and −4.4×10−11 esu, respectively. The time evolution of the picosecond pulses passing through the colloid is investigated.
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Translated from Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 72, No. 7, 2002, pp. 95–99.
Original Russian Text Copyright © 2002 by Ganeev, Ryasnyanski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Kamalov, Kodirov, Usmanov.
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Ganeev, R.A., Ryasnyanskii, A.I., Kamalov, S.R. et al. Nonlinear optical parameters of colloidal silver at various stages of aggregation. Tech. Phys. 47, 889–893 (2002). https://doi.org/10.1134/1.1495054
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DOI: https://doi.org/10.1134/1.1495054