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Modelling the formation of optical waveguides produced in LiNbO3 by laser induced thermal diffusion of lithium ions

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Abstract

Analytical and numerical modelling of the fabrication of optical waveguides in lithium niobate (LiNbO3) through direct writing with a continuous wave ultraviolet (UV) laser has been performed. It is proposed that the UV illumination induces heating of the surface and subsequent thermal diffusion of lithium which alters the refractive index in accordance with the lithium concentration dependence of the Sellmeier equations.

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Authors and Affiliations

  1. Optoelectronics Research Centre, University of Southampton, SO17 1BJ, Southampton, UK

    A.C. Muir, I.T. Wellington, S. Mailis & R.W. Eason

  2. School of Physics and Astronomy, University of Southampton, SO17 1BJ, Southampton, UK

    G.J. Daniell

  3. School of Mathematics, University of Southampton, SO17 1BJ, Southampton, UK

    C.P. Please

Authors
  1. A.C. Muir
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  2. G.J. Daniell
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  3. C.P. Please
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  4. I.T. Wellington
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  5. S. Mailis
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  6. R.W. Eason
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Correspondence to A.C. Muir.

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PACS

61.80.Ba; 66.30.Dn; 77.84.Dy

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Muir, A., Daniell, G., Please, C. et al. Modelling the formation of optical waveguides produced in LiNbO3 by laser induced thermal diffusion of lithium ions. Appl. Phys. A 83, 389–396 (2006). https://doi.org/10.1007/s00339-006-3493-4

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  • DOI: https://doi.org/10.1007/s00339-006-3493-4

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