Holographic enhancement in single crystal photorefractive fibers of Bi12Si020 (BSO) at 2i,=
514.5 nm and of Bii2Ti020 (BTO) at A,= 632.8 nm was measured as a function of spatial …

Comparative holographic characteristics are presented of pure and doped photorefractive Bi
12 TiO 20 crystals for the case of diffusion recording mechanism and isotropic diffraction. An …

The results of an experimental study of the effect of nonstoichiometric defects in oxygen and
the Bi: Si ratio, as well as Cr ions, on the photoconductivity of Bi 12 SiO 20 crystals are …

Bi2TeO5 is a new nonlinear optical crystal with interesting photorefractive properties. A
photorefractive grating that was written into a sample more than four years ago is still …

Este trabalho apresenta o estudo e o desenvolvimento de dois arranjos de interferometria
holográfica utilizando como meio de registro holográfico cristais fotorrefrativos de …

Optical-temperature investigations of stationary and photo-induced absorption in undoped
and Al (or Ga) doped Bi₁₂SiO₂₀ crystals are discussed. In the wave-number range …

Light-induced refractive-index changes, bulk-photovoltaic current densities, and
photoconductivities are investigated in lithium niobate crystals (LiNbO 3), using samples …

Three gratings are observed during holographic recording in Bi 4 Ti 3 O 12: There is a
primary photoinduced grating with fast response and a dephasing of π/2 with respect to the …

Improving the efficiency of solar cells is an active area of research in photovoltaic industry.
The research work presented in this dissertation is based on a quest for better and improved …

Abstract Pure and Fe-doped Bi 12 SiO 20 monocrystals have been studied. Five different
Feoncentrations (0.36, 1.8, 3.6, 7.2 and 10.8 mol%) were incorporated. An increase of the …