Articles producció científica> Química Física i Inorgànica

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

  • Identification data

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

  • Others:

    Author, as appears in the article.: JOAN J. CARVAJAL; YEAN-SHENG YONG; SHANMUGAM ARAVAZHI; SERGIO A. VÁZQUEZ CÓRDOVA; FRANCESC DÍAZ; JENNIFER L. HEREK; SONIA M. GARCÍA-BLANCO; MARKUS POLLNAU
    Department: Química Física i Inorgànica
    URV's Author/s: 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
    Keywords: Tungsten compounds Light luminescence potassium
    Abstract: 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.
    Research group: Física i Cristal·lografia de Nanomaterials Física i Cristal.lografia de Materials
    Thematic Areas: Chemistry Química Química
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 2159-3930
    Author identifier: 0000-0002-4389-7298; n/a; n/a; n/a; 0000-0003-4581-4967; n/a; n/a; n/a
    Record's date: 2017-02-23
    Last page: 532
    Journal volume: 7
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.osapublishing.org/ome/abstract.cfm?uri=ome-7-2-527
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1364/OME.7.000527
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2017
    First page: 527
    Publication Type: Article Artículo Article

  • Keywords:

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

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