Growth and studies of optical properties of double-doped In: Fe:LiTaO 3 crystal

Abstract

In:Fe:LiTaO3 crystals were grown in an air atmosphere using the Czochralski method. The photorefractive properties were measured by the two-wave coupling experiments, and light-induced scattering was used to characterize the optical damage. It was found that the photorefractive response speed of In:Fe:LiTaO3 was about four times faster than that of Fe:LiTaO 3, and the resistance ability to optical damage was drastically improved. The increase in damage resistance and faster response speed could be attributed to the Fe3+ losing their electron acceptor properties and, therefore, an increase in photoconductivity. © 2006 Wiley Periodicals, Inc.