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Structural and Optical Properties of Rare-Earth Doped Lithium Niobate Waveguides Formed by Mev Helium Implantation

Published online by Cambridge University Press:  21 February 2011

B. Herreros
Affiliation:
Departamento de Física de Materiales, C-IV, Universidad Autónoma de Madrid, Canto-blanco, E-28049 Madrid, Spain
G. Lifante
Affiliation:
Departamento de Física de Materiales, C-IV, Universidad Autónoma de Madrid, Canto-blanco, E-28049 Madrid, Spain
F. CussÓ
Affiliation:
Departamento de Física de Materiales, C-IV, Universidad Autónoma de Madrid, Canto-blanco, E-28049 Madrid, Spain
A. Kling
Affiliation:
Centro de Física Nuclear da Universidade de Lisboa, P-1699 Lisboa Codex, Portugal
J.C. Soares
Affiliation:
Centro de Física Nuclear da Universidade de Lisboa, P-1699 Lisboa Codex, Portugal
M.F. Da Silva
Affiliation:
Departamento de Física, ITN, P-2685 Sacavém, Portugal
P.D. Townsend
Affiliation:
Department of Physics and Astronomy, University of Sussex, Brighton BN19QH, United Kingdom
P.J. Chandler
Affiliation:
Department of Physics and Astronomy, University of Sussex, Brighton BN19QH, United Kingdom
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Abstract

Results of investigations of optical waveguides formed by high energy helium implantation into lithium niobate codoped with 5 mol% MgO and 1 mol% Tm3+ or 1 mol% Er3+ are reported. A comparative study of structural and luminescence properties between implanted and untreated samples has been performed by means of Rutherford backscattering (RBS) combined with channeling and photoluminescence methods, respectively in order to investigate residual lattice damage and the incorporation of the optical active rare earths. For the case of Tm a full substitutional incorporation on the lithium site and a high crystal quality in both bulk and implanted waveguide material has been found. For Er doped lithium niobate the channeling results show a fraction of Er randomly incorporated or forming precipitates and a deterioration of the waveguide's lattice. The optical investigations show in both cases only a slight broadening of the emission lines of the rare earths in the waveguides compared to the bulk material.

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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References

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Structural and Optical Properties of Rare-Earth Doped Lithium Niobate Waveguides Formed by Mev Helium Implantation
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