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

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<mark>Journal publication date</mark>07/2004
<mark>Journal</mark>Semiconductors
Issue number7
Volume38
Number of pages6
Pages (from-to)812-817
Publication statusPublished
Original languageEnglish

Abstract

Energy and kinetic characteristics of the induced 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.