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    Upconversion luminescence of CsScF4 crystals doped with erbium and ytterbium

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    DOI:
    10.1016/j.optmat.2016.09.016
    URI (for links/citations):
    http://elib.sfu-kras.ru/handle/2311/33184
    Author:
    Ikonnikov, D. A.
    Voronov, V. N.
    Molokeev, M. S.
    Александровский, А. С.
    Corporate Contributor:
    Институт инженерной физики и радиоэлектроники
    Лаборатория нелинейной оптики и спектроскопии
    Date:
    2016-10
    Journal Name:
    Optical Materials
    Journal Quartile in Scopus:
    Q1
    Journal Quartile in Web of Science:
    Q2
    Bibliographic Citation:
    Ikonnikov, D. A. Upconversion luminescence of CsScF4 crystals doped with erbium and ytterbium [Текст] / D. A. Ikonnikov, V. N. Voronov, M. S. Molokeev, А. С. Александровский // Optical Materials. — 2016. — Т. 60. — С. 594-589

    Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.

    Abstract:
    Tetragonal CsScF4 crystals doped with (5 at.%) Er and Er/Yb (0.5 at.%/5 at.%) are grown and their crystal structure is determined to belong to Pmmn space group. Er and Yb ions are shown to occupy distorted octahedral Sc sites with the center of inversion. Bright visible upconversion luminescence was observed under 970e980 nm pumping with red (4F9/2), yellow (4S3/2) and green (2H11/2) bands of comparable intensity. UCL tuning curves maximize at 972 nm (CSF:Er) and at 969.7 nm (CSF:Er,Yb) pumping wavelengths. Different ratios between yellow-green and red luminescence intensities in CSF:Er and CSF:Er, Yb are explained by contribution of cross-relaxation in CSF:Er UCL. UC in CSF:Er is a three stage process while UC in CSF:Er, Yb is a two stage process. The peculiarities of power dependences are explained by the power-dependent repopulation between starting levels of UC.
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    • Статьи в научных журналах (эффективный контракт) [4054]
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