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

  • Datos identificativos

    Identificador: PC:2575
    Handle: https://hdl.handle.net/20.500.11797/PC2575
    Autores:
    JOAN J. CARVAJALYEAN-SHENG YONGSHANMUGAM ARAVAZHISERGIO A. VÁZQUEZ CÓRDOVAFRANCESC DÍAZJENNIFER L. HEREKSONIA M. GARCÍA-BLANCOMARKUS POLLNAU
    Resumen:
    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.

  • Otros:

    Autor según el artículo: JOAN J. CARVAJAL; YEAN-SHENG YONG; SHANMUGAM ARAVAZHI; SERGIO A. VÁZQUEZ CÓRDOVA; FRANCESC DÍAZ; JENNIFER L. HEREK; SONIA M. GARCÍA-BLANCO; MARKUS POLLNAU
    Departamento: Química Física i Inorgànica
    Autor/es 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
    Palabras clave: Tungsten compounds Light luminescence potassium
    Resumen: 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.
    Grupo de investigación: Física i Cristal·lografia de Nanomaterials Física i Cristal.lografia de Materials
    Áreas temáticas: Chemistry Química Química
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 2159-3930
    Identificador del autor: 0000-0002-4389-7298; n/a; n/a; n/a; 0000-0003-4581-4967; n/a; n/a; n/a
    Fecha de alta del registro: 2017-02-23
    Página final: 532
    Volumen de revista: 7
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://www.osapublishing.org/ome/abstract.cfm?uri=ome-7-2-527
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI del artículo: 10.1364/OME.7.000527
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2017
    Página inicial: 527
    Tipo de publicación: Article Artículo Article

  • Palabras clave:

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

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