Bandwidth enhancement of MIR emission in Yb3+/Er3+/Dy3+ triply doped fluoro-tellurite glass

BALAJI, Sathravada, ALLU, Amarnath R, BISWAS, Kaushik, GUPTA, Gaurav, GHOSH, Debarati and ANNAPURNA, Kalyandurg (2017). Bandwidth enhancement of MIR emission in Yb3+/Er3+/Dy3+ triply doped fluoro-tellurite glass. Laser Physics Letters, 14 (3), 035804.

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Official URL: https://iopscience.iop.org/article/10.1088/1612-20...
Link to published version:: https://doi.org/10.1088/1612-202x/aa5c1b
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    Abstract

    Enhanced bandwidth of MIR emission from Yb3+/Er3+/Dy3+ triply doped low phonon oxide glass system has been reported in this work. With considerable gain cross-section, the MIR emission bandwidth can be stretched from ~2600 to 3100 nm (~500 nm) which is practically not possible to obtain from Er3+ or Dy3+ ions singly doped systems. Co-doping of Dy3+ ions not only quenches the unfavourable visible up-converted emissions from Er3+ ions but also mitigates the prominent ~1.5 µm emission. A broad MIR emission on superimposition of Er3+ ~2.76 µm and Dy3+ ~2.95 µm emissions was obtained owing to the efficient energy transfer (ET) Yb3+  →  Er3+  →  Dy3+ upon ~980 nm excitation. The present glasses can be fiberized to develop compact and tunable MIR solid state fiber laser sources.

    Item Type: Article
    Uncontrolled Keywords: Optoelectronics & Photonics; 0205 Optical Physics
    Identification Number: https://doi.org/10.1088/1612-202x/aa5c1b
    Page Range: 035804
    SWORD Depositor: Symplectic Elements
    Depositing User: Symplectic Elements
    Date Deposited: 19 May 2021 15:41
    Last Modified: 19 May 2021 15:45
    URI: http://shura.shu.ac.uk/id/eprint/27131

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