title: Photorefractive two-step recording in a piezoelectric La3Ga5SiO14 crystal doped with praseodymium.
abstract: The first experimental verification to the authors' knowledge of efficient two-step recording in a photorefractive and piezoelectric crystal of La(3)Ga(5)SiO(14):Pr(3+) with cw laser light (I<20 W/cm(2)) is reported. We found nonlinear behavior of the photorefractive sensitivity and photovoltaic current, indicating that the excitation process is connected to excitation of 4f(2) electrons of the Pr(3+) dopant through an intermediate level to the conduction band. This two-step nature of the photorefractive effect makes the crystal an exciting new candidate for applications in holographic storage.
authors: Optics and Fluid Department, Risø National Laboratory, DK-4000 Roskilde, Denmark.
authors: T
authors: T
authors: Nikolajsen
authors: P M
authors: PM
authors: Johansen
authors: E
authors: E
authors: Dubovik
authors: T
authors: T
authors: Batirov
authors: R
authors: R
authors: Djalalov