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Promising emission behavior in Pr 3+ /In selenide-chalcogenide-glass small-core step index fiber (SIF)

Sakr, Hesham; Tang, Zhuoqi; Furniss, David; Sojka, Lukasz; Sujecki, Slawomir; Benson, Trevor M.; Seddon, Angela B.

Authors

Hesham Sakr

Zhuoqi Tang

Lukasz Sojka

Slawomir Sujecki

Trevor M. Benson

ANGELA SEDDON angela.seddon@nottingham.ac.uk
Professor of Inorganic Materials



Abstract

Selenide-chalcogenide glass, small-core, step-index fiber (SIF), core-doped with Pr3+: 9.51 × 1024 ions m−3 (500 ppmw) is fabricated for the first time with indium to help solubilize Pr3+. Core diameters of 20 or 40 μm are confirmed using scanning electron microscopy and near-field imaging; fibre numerical aperture is ∼0.4. Optical loss is ≥ 4.9 dB m−1 across the 3–9 μm mid-infrared (MIR) spectral range. On pumping at 1.55 μm or 2.013 μm, the SIFs give broad MIR emission across 3.5–6 μm assigned to 3H6 → 3H5 and 3H5 → 3H4. The Pr3+ emission-lifetime at 4.7 μm decreases from bulk-glass (10.1 ± 0.3 ms), to intermediately processed fiber (8.10 ± 0.5 ms) to SIF (7.1 ± 0.5 ms) induced by the processing. On end-pumping SIFs at 2.013 μm, the output pump-power and emission intensity at 4.7 μm became sub-linear and super-linear, respectively, suggesting MIR excited-state saturation is occurring.

Citation

Sakr, H., Tang, Z., Furniss, D., Sojka, L., Sujecki, S., Benson, T. M., & Seddon, A. B. (2017). Promising emission behavior in Pr 3+ /In selenide-chalcogenide-glass small-core step index fiber (SIF). Optical Materials, 67, 98-107. https://doi.org/10.1016/j.optmat.2017.03.034

Journal Article Type Article
Acceptance Date Mar 22, 2017
Online Publication Date Apr 1, 2017
Publication Date 2017-05
Deposit Date May 9, 2017
Publicly Available Date May 9, 2017
Journal Optical Materials
Print ISSN 0925-3467
Electronic ISSN 1873-1252
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 67
Pages 98-107
DOI https://doi.org/10.1016/j.optmat.2017.03.034
Keywords Mid-infrared; Chalcogenide glass; Rare earth ions; Emission; Emission-lifetime; Excited-state saturation
Public URL http://eprints.nottingham.ac.uk/id/eprint/42642
Publisher URL http://www.sciencedirect.com/science/article/pii/S0925346717301763
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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