Tm3+ and Yb3+ co-doped tellurite glasses for short cavity optical fiber lasers: Fabrication and optical characterization

    Authors

    D. Milanese; H. Gebavi; J. Lousteau; M. Ferraris; A. Schulzgen; L. Li; N. Peyghambarian; S. Taccheo;F. Auzel

    Comments

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    Abbreviated Journal Title

    J. Non-Cryst. Solids

    Keywords

    Tellurite glass; Tm; Yb; Rare earth; EMISSIONS; Materials Science, Ceramics; Materials Science, Multidisciplinary

    Abstract

    In this paper Tm-doped tellurite glasses (75TeO(2)-20ZnO-5 Na2O, mol%) were studied and sensitization with Yb3+ as co-dopant was carried out in order to assess its influence on the emission properties and improve pump efficiency and wavelength emission range. Emission spectra and lifetime measurements were obtained by pumping either at 785 nm or 980 nm, thus exploiting the Yb-Tm energy transfer mechanism. Doping levels of Yb from below 1 to up 5 mol% were investigated in order to evaluate the effectiveness of energy transfer process and glasses containing an overall content of 9 mol% rare earth ions were proved to be successfully fabricated. All glasses were fully characterized from a material and spectroscopic point of view. Tellurite glasses with 4 and 1 mol% of Tm3+ and Yb3+ ions respectively were found to show a good compromise between emission efficiency and lifetime decay values. A quenching concentration of Yb3+ ions up to 14 mol% was also defined for this type of glass system. (C) 2010 Elsevier B.V. All rights reserved.

    Journal Title

    Journal of Non-Crystalline Solids

    Volume

    356

    Issue/Number

    44-49

    Publication Date

    1-1-2010

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    2378

    Last Page

    2383

    WOS Identifier

    WOS:000285282100019

    ISSN

    0022-3093

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