Research Repository

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Comparative study of praseodymium additives in active selenide chalcogenide optical fibers (2018)
Journal Article
Tang, Z., Sojka, L., Furniss, D., Nunes, J., Sakr, H., Barney, E., …Seddon, A. B. (2018). Comparative study of praseodymium additives in active selenide chalcogenide optical fibers. Optical Materials Express, 8(12), 3910-3926. doi:10.1364/OME.8.003910

The choice of rare earth additive when doping chalcogenide glasses can affect their mid-infrared fiber performance. Three praseodymium additives, Pr-foil, PrCl3 and PrI3 are investigated in Ge-As-Ga-Se fibers. All the fibers are X-ray amorphous and t... Read More

Modeling of resonantly pumped mid-infrared Pr3+-doped chalcogenide fiber amplifier with different pumping schemes (2018)
Journal Article
Shen, M., Furniss, D., Tang, Z., Barney, E. R., Sójka, L., Sujecki, S., …Seddon, A. B. (2018). Modeling of resonantly pumped mid-infrared Pr3+-doped chalcogenide fiber amplifier with different pumping schemes. Optics Express, 26(18), doi:10.1364/OE.26.023641. ISSN 1094-4087

We propose a model for resonantly pumped Pr3+-doped chalcogenide fiber amplifiers which includes excited state absorption and the full spectral amplified spontaneous emission spanning from 2 μm to 6 μm. Based on this model, the observed near- and mid... Read More

Spatiotemporal modeling of mid-infrared photoluminiscence from Terbium (III) ion doped chalcogenide-selenide multimode fibers (2018)
Conference Proceeding
Sujecki, S., Sojka, L., Tang, Z., Barney, E., Furniss, D., Benson, T., & Seddon, A. (2018). Spatiotemporal modeling of mid-infrared photoluminiscence from Terbium (III) ion doped chalcogenide-selenide multimode fibers. In REMAT 2018 5th International Conference on Rare Earth Materials

Mid-infrared (MIR) light has numerous applications in medicine, biology, agriculture, defense and security. Therefore in many laboratories intensive research is being carried out to develop MIR light technology in order to achieve a similar level of... Read More

Numerical analysis of spontaneous mid-infrared light emission from terbium ion doped multimode chalcogenide fibers (2018)
Journal Article
Sujecki, S., Sojka, L., Pawlik, E., Anders, K., Piramidowicz, R., Tang, Z., …Seddon, A. (2018). Numerical analysis of spontaneous mid-infrared light emission from terbium ion doped multimode chalcogenide fibers. Journal of Luminescence, 199, doi:10.1016/j.jlumin.2018.03.031. ISSN 0022-2313

In this contribution we use a numerical model to study the photoluminescence emitted by Tb3+ doped chalcogenide-selenide glass fibers pumped by laser light at approximately 3 µm. The model consists of the set of ordinary differential equations (ODEs)... Read More

Numerical modelling of Tb3+ doped selenide-chalcogenide multimode fibre based spontaneous emission sources (2017)
Journal Article
multimode fibre based spontaneous emission sources. Optical and Quantum Electronics, 49(12), doi:10.1007/s11082-017-1255-5. ISSN 0306-8919

A model is developed of a terbium (III) ion doped selenide chalcogenide glass fibre source that provides spontaneous emission within the mid-infrared (MIR) wavelength range. Three numerical algorithms are used to calculate the solution and compare th... Read More

Modelling of multimode selenide-chalcogenide glass fibre based MIR spontaneous emission sources (2017)
Conference Proceeding
Sujecki, S., Sójka, L., Bereś-Pawlik, E., Piramidowicz, R., Sakr, H., Tang, Z., …Seddon, A. B. (2017). Modelling of multimode selenide-chalcogenide glass fibre based MIR spontaneous emission sources. doi:10.1109/ICTON.2017.8024909

Chalcogenide glass fibres have been demonstrated as a suitable medium for the realisation of spontaneous emission sources for mid-infrared photonics applications with a particular emphasis on sensor technology. Such sources give a viable alternative... Read More

Multicomposition EPSR: toward transferable potentials to model chalcogenide glass structures (2016)
Journal Article
Towey, J. J., & Barney, E. R. (in press). Multicomposition EPSR: toward transferable potentials to model chalcogenide glass structures. Journal of Physical Chemistry B, doi:10.1021/acs.jpcb.6b08793. ISSN 1520-6106

The structure of xAs40Se60–(1 – x)As40S60 glasses, where x = 1.000, 0.667, 0.500, 0.333, 0.250, and 0.000, is investigated using a combination of neutron and X-ray diffraction coupled with computational modeling using multicomposition empirical poten... Read More

Numerical modeling of lathanide-ion doped fibre lasers operating within mid-infrared wavelength region (2016)
Conference Proceeding
Sójka, L., Furniss, D., Tang, Z., Sakr, H., Barney, E. R., Benson, T. M., …Fuhrberg, P. (2016). Numerical modeling of lathanide-ion doped fibre lasers operating within mid-infrared wavelength region

We discuss the numerical modelling of lanthanide-ion doped chalcogenide glass fibre lasers for operation in the mid-infrared wavelength region. We extract the modelling parameters from emission and absorption measurements using Judd-Ofelt and McCumbe... Read More

Dy3+-doped selenide chalcogenide glasses: influence of Dy3+ dopant-aditive and containment (2016)
Journal Article
Furniss, D., Tang, Z., Barney, E., Neate, N. C., Benson, T., & Seddon, A. (2016). Dy3+-doped selenide chalcogenide glasses: influence of Dy3+ dopant-aditive and containment. Journal of the American Ceramic Society, 99(7), 2283-2291. doi:10.1111/jace.14218

This work reports on process‐induced impurities in rare‐earth ion: Dy3+‐doped selenide chalcogenide glasses, which are significant materials for active photonic devices in the mid‐infrared region. In particular, the effect of contamination from t... Read More

Alkali environments in tellurite glasses (2015)
Journal Article
Barney, E. R., Hannon, A. C., Holland, D., Umesaki, N., & Tatsumisago, M. (2015). Alkali environments in tellurite glasses. Journal of Non-Crystalline Solids, 414, doi:10.1016/j.jnoncrysol.2015.01.023. ISSN 0022-3093

Neutron diffraction measurements are reported for five binary alkali tellurite glasses, xM2O · (100 − x)TeO2 (containing 10 and 20 mol% K2O, 10 and 19 mol% Na2O, and 20 mol% 7Li2O), together with 23Na MAS NMR measurements for the sodium containing gl... Read More

Correlating structure with non-linear optical properties in xAs40Se60 x (1 − x)As40S60 glasses (2015)
Journal Article
Barney, E. R., Abdel-Moneim, N. S., Towey, J. J., Titman, J., McCarthy, J. E., Bookey, H. T., …Seddon, A. B. (2015). Correlating structure with non-linear optical properties in xAs40Se60 x (1 − x)As40S60 glasses. Physical Chemistry Chemical Physics, 17(9), 6314-6327. doi:10.1039/c4cp05599c

A series of xAs40Se60·(100 − x)As40S60 glasses, where x = 0, 25, 33, 50, 67, 75 and 100 mol% As40Se60, has been studied using neutron and X-ray total scattering, Raman spectroscopy and 77Se MAS-NMR. The results are presented with measurements of non-... Read More

The local environment of Dy3+in selenium-rich chalcogenide glasses (2014)
Journal Article
Barney, E. R., Tang, Z., Seddon, A., Furniss, D., Sujecki, S., Benson, T. M., …Gianolio, D. (in press). The local environment of Dy3+in selenium-rich chalcogenide glasses. RSC Advances, 4(80), doi:10.1039/C4RA07192A. ISSN 2046-2069

The environment of Dy3+ is investigated when it is added as DyCl3 or Dy foil into two base glasses, Ge16.5As19−xGaxSe64.5, where x = 3 or 10 at%, at doping levels between 0 and 3000 parts per million by weight (ppmw) Dy3+. Extended X-ray Absorption F... Read More