Applied Physics A

, Volume 98, Issue 4, pp 909–912 | Cite as

Thermal and long-term stability of fast-ion-irradiation-induced refractive index changes in lithium niobate crystals

  • Mohammad-Reza Zamani-Meymian
  • Lena Jentjens
  • Niels L. Raeth
  • Konrad Peithmann
  • Karl Maier
Article

Abstract

Irradiation of congruently melting, nominally undoped lithium niobate crystals (LiNbO3) with high-energy, low-mass 3He ions, which are transmitted through the crystal, causes large and stable changes of the refractive index. In the irradiated regions, the extraordinary index is increased whereas the ordinary index is diminished. The decay of these changes upon annealing treatments up to 400°C is investigated, exhibiting a strongly non-monoexponential decay behaviour. Long-term measurements of the refractive index changes yield no pattern erasure on a timescale of four years.

PACS

78.20 42.65 

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Mohammad-Reza Zamani-Meymian
    • 1
  • Lena Jentjens
    • 1
  • Niels L. Raeth
    • 1
  • Konrad Peithmann
    • 1
  • Karl Maier
    • 1
  1. 1.Helmholtz-Institut für Strahlen- und KernphysikUniversität BonnBonnGermany

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