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Opt Express. 2010 Mar 15;18(6):5449-58. doi: 10.1364/OE.18.005449.

Micro-Raman characterization of Zn-diffused channel waveguides in Tm(3+):LiNbO(3).

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Departamento de Física de Materiales (Módulo 04), Universidad Autónoma de Madrid, Avda. Francisco Tomás yValiente 7. 28049 Madrid, Spain.


In this work micro-Raman scattering experiments have been performed in LiNbO(3):Tm(3+) samples with waveguides fabricated by Zn(2+) in-diffusion. The results shown that Zn(2+) ions enter the lattice in Li(+) sites, but also in interstitial positions. This produces a compaction of the lattice close to the surface of the sample, generating the waveguide. It is shown that this region is surrounded by a different area in which the lattice is relaxed to recover the characteristic lattice parameters of LiNbO(3):Tm(3+).

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