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In doping and post-treatment effect on holographic properties in In:Ce:Cu:LiNbO3 crystal

TAO ZHANG1,* , TAO GENG1, YAN-TANG DONG1, QIANG DAI1, WEI-MIN SUN1, YU-HENG XU2

Affiliation

  1. College of Science, Harbin Engineering University, Harbin 150001, China
  2. School of Astronautics, Harbin Institute of Technology, Harbin 150001, China

Abstract

A series of triply-doped In:Ce:Cu:LiNbO3 crystals with a varying level of In doping were grown by Czochraski technique in air atmosphere, and some samples were made post-treatment such as oxidation and reduction in different powders at high temperature. The two-wave coupling experiment was employed to measure the holographic properties such as diffraction efficiency, erasure time, the relation between light intensity and photoconductivity, optical excited carrier style, and loss signal-to-noise-ratio coefficient. The results indicate that the holographic properties can be improved by proper level of In doping and post-treatment in In:Ce:Cu:LiNbO3. The underlying mechanism on the effect of In doping and post-treatment on the properties is also discussed in terms of the ion location in the host lattice and photoconductivity change in LiNbO3..

Keywords

LiNbO3 crystals, In doping, Post-treatment, Holographic properties.

Submitted at: Feb. 8, 2008
Accepted at: July 10, 2008

Citation

TAO ZHANG, TAO GENG, YAN-TANG DONG, QIANG DAI, WEI-MIN SUN, YU-HENG XU, In doping and post-treatment effect on holographic properties in In:Ce:Cu:LiNbO3 crystal, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 8, pp. 2111-2116 (2008)