Articles producció científica> Química Física i Inorgànica

Direct confocal lifetime measurements on rare-earth-doped media exhibiting radiation trapping

  • Dades identificatives

    Identificador: PC:2575
    Handle: https://hdl.handle.net/20.500.11797/PC2575
    Autors:
    JOAN J. CARVAJALYEAN-SHENG YONGSHANMUGAM ARAVAZHISERGIO A. VÁZQUEZ CÓRDOVAFRANCESC DÍAZJENNIFER L. HEREKSONIA M. GARCÍA-BLANCOMARKUS POLLNAU
    Resum:
    Radiation trapping occurs in rare-earth-doped active media with strong spectral overlap of luminescence and ground-state absorption. It is demonstrated experimentally that a confocal measurement mitigates the influence of radiation trapping on the measured luminescence lifetime, hence allowing for direct extraction of the lifetime from the measured decay curves. The radiation trapping effect is largely suppressed by probing a small sample volume and rejecting the photons reemitted from the unpumped region. This non-destructive measurement method is applied to ytterbium (Yb3+) activated potassium double tungstate crystalline layers with Yb3+ concentrations ranging from 1.2 at.% up to 76 at.% (~8 × 1019 - 5 × 1021 cm-3). The measured lifetime values are comparable to the results reported for Yb3+-doped potassium double tungstate powder diluted in liquid.

  • Altres:

    Autor segons l'article: JOAN J. CARVAJAL; YEAN-SHENG YONG; SHANMUGAM ARAVAZHI; SERGIO A. VÁZQUEZ CÓRDOVA; FRANCESC DÍAZ; JENNIFER L. HEREK; SONIA M. GARCÍA-BLANCO; MARKUS POLLNAU
    Departament: Química Física i Inorgànica
    Autor/s de la URV: CARVAJAL MARTÍ, JOAN JOSEP; YEAN-SHENG YONG; SHANMUGAM ARAVAZHI; SERGIO A. VÁZQUEZ CÓRDOVA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL; JENNIFER L. HEREK; SONIA M. GARCÍA-BLANCO; MARKUS POLLNAU
    Paraules clau: Tungsten compounds Light luminescence potassium
    Resum: Radiation trapping occurs in rare-earth-doped active media with strong spectral overlap of luminescence and ground-state absorption. It is demonstrated experimentally that a confocal measurement mitigates the influence of radiation trapping on the measured luminescence lifetime, hence allowing for direct extraction of the lifetime from the measured decay curves. The radiation trapping effect is largely suppressed by probing a small sample volume and rejecting the photons reemitted from the unpumped region. This non-destructive measurement method is applied to ytterbium (Yb3+) activated potassium double tungstate crystalline layers with Yb3+ concentrations ranging from 1.2 at.% up to 76 at.% (~8 × 1019 - 5 × 1021 cm-3). The measured lifetime values are comparable to the results reported for Yb3+-doped potassium double tungstate powder diluted in liquid.
    Grup de recerca: Física i Cristal·lografia de Nanomaterials Física i Cristal.lografia de Materials
    Àrees temàtiques: Chemistry Química Química
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 2159-3930
    Identificador de l'autor: 0000-0002-4389-7298; n/a; n/a; n/a; 0000-0003-4581-4967; n/a; n/a; n/a
    Data d'alta del registre: 2017-02-23
    Pàgina final: 532
    Volum de revista: 7
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2017
    Pàgina inicial: 527
    Tipus de publicació: Article Artículo Article

  • Paraules clau:

    Terres rares
    Radiació
    Tungsten compounds
    Light
    luminescence
    potassium
    Chemistry
    Química
    Química
    2159-3930

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