Fluorophosphate glasses doped with PbSe quantum dots and their nonlinear optical characteristics

V. G. Melekhin, E. V. Kolobkova, A. A. Lipovskii, V. D. Petrikov, A. M. Malyarevich, Vasili Savitski

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Abstract

A new fluorophosphate glass matrix containing PbSe quantum dots characterized by a narrow size distribution (Delta R/R similar to 5-7%, where R is the size of a quantum dot) is prepared under heat treatment. It is demonstrated that fluorophosphate glasses can be doped by introducing (ZnSe + PbO) or PbSe into the composition of the glass. The optical absorption spectra of the quantum dots corresponding to the strong quantum confinement regime are studied over a wide range of quantum-dot sizes (4-18 nm). The nonlinear optical absorption is investigated at a wavelength of 1.54 mu m. It is revealed that the introduction of (ZnSe + PbO) rather than of PbSe into the composition of the glass improves the bleaching contrast owing to a more uniform distribution of the quantum dots over the volume of the glass sample.

Original languageEnglish
Pages (from-to)351-355
Number of pages5
JournalGlass Physics and Chemistry
Volume34
Issue number4
DOIs
Publication statusPublished - Aug 2008

Keywords

  • phosphate glass
  • lasers
  • photonics

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    Melekhin, V. G., Kolobkova, E. V., Lipovskii, A. A., Petrikov, V. D., Malyarevich, A. M., & Savitski, V. (2008). Fluorophosphate glasses doped with PbSe quantum dots and their nonlinear optical characteristics. Glass Physics and Chemistry , 34(4), 351-355. https://doi.org/10.1134/S1087659608040020