Applied Physics B

, Volume 68, Issue 5, pp 777–784

Photorefractive properties of highly-doped lithium niobate crystals in the visible and near-infrared

Authors

  • K. Peithmann
    • Fachbereich Physik, Universität Osnabrück, D-49069 Osnabrück, Germany
  • A. Wiebrock
    • Fachbereich Physik, Universität Osnabrück, D-49069 Osnabrück, Germany
  • K. Buse
    • Fachbereich Physik, Universität Osnabrück, D-49069 Osnabrück, Germany
Regular paper

DOI: 10.1007/s003400050704

Cite this article as:
Peithmann, K., Wiebrock, A. & Buse, K. Appl Phys B (1999) 68: 777. doi:10.1007/s003400050704

Abstract.

Light-induced refractive-index changes, bulk-photovoltaic current densities, and photoconductivities of photorefractive iron-doped lithium niobate crystals (iron concentrations between 0.02 and 0.17 wt. %) are investigated in detail using visible and near-infrared light. It turns out that the one-center model predicts the material performance correctly for small iron concentrations (cFe<0.06 wt. % Fe2O3), only. A strong increase of the photoconductivity for higher doping levels limits the space-charge fields. Refractive-index changes up to 7×10-4 for green and 2.8×10-4 for near-infrared ordinarily polarized light are obtained. The corresponding hologram multiplexing numbers are 11 for green and 5 for near-infrared light.

PACS: 42.65; 42.70; 72.40; 78.20

Copyright information

© Springer-Verlag 1999