Optical and Photorefractive Characterization of BTO Crystals Doped with Cd, Ca, Ga, and V

Author:

Riehemann S.1,Rickermann F.1,Volkov V. V.12,Egorysheva A. V.12,Von Bally G.1

Affiliation:

1. Laboratory of Biophysics, Institute of Experimental Audiology, University of Münster, Robert–Koch–Straße 45, D–48129 Münster, Germany

2. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 117907, Russia

Abstract

Single crystals of Bi12TiO20 (BTO) are grown by a modified Czochralski technique. Doping with cadmium, calcium, gallium, and vanadium is performed by adding corresponding oxides to the melt. Optical parameters like refractive index, optical absorption, optical activity, light induced absorption, electrooptic coefficient, and photoconductivity are determined. Photorefractive properties of the samples are characterized with the help of a conventional two-beam interference setup. Diffraction efficiency and decay time constant of elementary holograms are determined. The influence of the utilized dopands is discussed.

Publisher

World Scientific Pub Co Pte Lt

Subject

Physics and Astronomy (miscellaneous),Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials

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