Browsing by Author "Malyarevich, A."

Now showing items 1-5 of 5

    • Non-linear optical properties of transparent glass-ceramics based on Co2+:Zn(Al,Ga)2O4 spinel nanocrystals 

      Glazunov, I.; Malyarevich, A.; Yumashev, K.; Dymshits, O.; Alekseeva, I.; Zhilin, A. (БНТУ, 2021)
      Transparent glass-ceramics containing Co2+:Zn(Al,Ga)2O4 spinel nanocrystals with sizes of 6–11 nm were studied. Absorption band of the Co2+ ions in the material is shifted to longer wavelengths as compared with glass-ceramics with no Ga2O3 addition. Absorption saturation at 1.54 μm was observed. The developed glassceramics is promising as saturable absorbers for 1.6 μm erbium lasers.
      2022-02-02

    • Optical properties of spinel based glass-ceramics of the Zno-Al2O3-Ga2O3-SiO2 system doped with Co2+ ions 

      Malyarevich, A.; Yumashev, K.; Dymshits, O.; Alekseeva, I.; Zhilin, A. (БНТУ, 2022)
      Transparent glass-ceramics containing Co2+:Zn(Al,Ga)2O4 spinel nanocrystals with sizes of 6–11 nm were studied. Absorption band of the Co2+ ions in the material is shifted to longer wavelengths as compared with glass-ceramics with no Ga2O3 addition. Absorption saturation at 1.54 μm was observed and its characteristics (absorption recovery time, ground-state and excited-state ...
      2022-12-28

    • Thermal expansion of KYbXY1-X(WO4)2 crystals 

      Yumashev, K.; Trusova, E.; Guretskii, S.; Karpinsky, D.; Trukhanova, K.; Kuleshov, N.; Malyarevich, A. (БНТУ, 2022)
      Average and differential linear thermal expansion coefficients of KYbxY1-x(WO4)2 crystals are determined in the directions of the optical indicatrix axes Np, Nm and Ng using dilatometric technique. Dependence of the average and differential linear thermal expansion coefficients on the temperature in the range of 75–290 C and ytterbium contains x from 0 to 1.0 are discussed.
      2022-12-28

    • Thermo-optic coefficients of monoclinic Er3+:(GdY)2SiO5 crystal 

      Yumashev, K.; Malyarevich, A.; Hertsova, A.; Goman, V.; Pavlovski, L. (БНТУ, 2022)
      Thermo-optic coefficients of the Er3+-doped gadolinium-yttrium oxyorthosilicate crystal Er3+:GdYSO are determined at a wavelength of 632.8 nm for light polarizations E // Np, Nm and Ng. Linear thermal expansion coefficients are estimated for this crystal in the directions of the optical indicatrix axes Nm and Ng.
      2022-12-28

    • Thermo-optic properties of orthorhombic BeAl6O10 crystal 

      Yumashev, K.; Malyarevich, A.; Vilejshikova, E.; Goman, V.; Pavlovski, L. (БНТУ, 2021)
      Thermo-optic coefficients dn/dT were determined for orthorhombic BeAl6O10 crystal for light polarizations E || Np, Nm and Ng in the wavelength range of 0.4–1.1 m. Thermo-optic dispersion formulas for principal thermo-optic coefficients of BeAl6O10 are presented for this spectral range. The principal dn/dT are positive and show a polarization-anisotropy: dnp/dT = 6.4, dnm/dT = ...
      2022-02-02