, Volume 38, Issue 7, pp 812-817

Nonlinear properties of phototropic media on the basis of CuxSe nanoparticles in quartz glass

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Abstract

Energy and kinetic characteristics of theinduced transparency in quartz sol-gel glasses containing copper selenide nanoparticles of different stoichiometry are studied. The dependence of the nonlinear optical properties of the glass samples on the chemical composition of copper selenide particles, which gives rise to an additional absorption band in the near-infrared region and determines its spectral position, is established. It is found that the time of relaxation of the induced transparency increases and the peak absorption cross section decreases as the absorption maximum shifts to the low-energy spectral region.

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Translated from Fizika i Tekhnika Poluprovodnikov, Vol. 38, No. 7, 2004, pp. 846–851.
Original Russian Text Copyright © 2004 by Zolotovskaya, Posnov, Prokosin, Yumashev, Gurin, Alexeenko.