Skip to main content

Research Repository

Advanced Search

Professor ANGELA SEDDON's Outputs (57)

Determining small refractive index contrast in chalcogenide-glass pairs at mid-infrared wavelengths (2019)
Journal Article
Fang, Y., Furniss, D., Jayasuriya, D., Parnell, H., Crane, R., Tang, Z., Barney, E., Canedy, C., Kim, C., Kim, M., Merritt, C., Bewley, W., Vurgaftman, I., Meyer, J., Seddon, A., & Benson, T. (2019). Determining small refractive index contrast in chalcogenide-glass pairs at mid-infrared wavelengths. Optical Materials Express, 9(5), 2022-2036. https://doi.org/10.1364/OME.9.002022

A two-composition thin film (Ge20Sb10Se70/Ge20Sb10Se67S3 atomic%core/cladding glasses) was fabricated using a hot-fibre-pressing technique in which both glasses follow the same post-fibre processing. A simple approach is proposed that uses normal inc... Read More about Determining small refractive index contrast in chalcogenide-glass pairs at mid-infrared wavelengths.

Experimental and numerical investigation to rationalize both near-infrared and mid-infrared spontaneous emission in Pr3+ doped selenide-chalcogenide fiber (2019)
Journal Article
Sujecki, S., Sojka, L., Beres-Pawlik, E., Anders, K., Piramidowicz, R., Tang, Z., Furniss, D., Barney, E., Benson, T., & Seddon, A. (2019). Experimental and numerical investigation to rationalize both near-infrared and mid-infrared spontaneous emission in Pr3+ doped selenide-chalcogenide fiber. Journal of Luminescence, 209, 14-20. https://doi.org/10.1016/j.jlumin.2019.01.023

This contribution reports on detailed experimental and numerical investigations of both near-infrared (NIR) and mid-infrared (MIR) photoluminescence obtained in praseodymium trivalent ion doped chalcogenide-selenide glass fiber. The experimental anal... Read More about Experimental and numerical investigation to rationalize both near-infrared and mid-infrared spontaneous emission in Pr3+ doped selenide-chalcogenide fiber.

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., Sujecki, S., Benson, T. M., & Seddon, A. B. (2018). Comparative study of praseodymium additives in active selenide chalcogenide optical fibers. Optical Materials Express, 8(12), 3910-3926. https://doi.org/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 about Comparative study of praseodymium additives in active selenide chalcogenide optical fibers.

Prospective on using mid-infrared supercontinuum laser sources for in vivo spectral discrimination of disease (2018)
Journal Article
Seddon, A. B., Napier, B., Lindsay, I., Lamrini, S., Moselund, P. M., Stone, N., Bang, O., & Farries, M. (2018). Prospective on using mid-infrared supercontinuum laser sources for in vivo spectral discrimination of disease. Analyst, 143(24), 5874-5887. https://doi.org/10.1039/c8an01396a

Mid-infrared (MIR) fibre-optics may play a future role in in vivo diagnosis of disease, including cancer. Recently, we reported for the first time an optical fibre based broadband supercontinuum (SC) laser source spanning 1.3 to 13.4 μm wavelength to... Read More about Prospective on using mid-infrared supercontinuum laser sources for in vivo spectral discrimination of disease.

Time domain analysis of lanthanide ion doped chalcogenide glass fibers (2018)
Presentation / Conference Contribution
Sujecki, S., Sojka, L., Tang, Z., Barney, E., Furniss, D., Benson, T., & Seddon, A. (2018, October). Time domain analysis of lanthanide ion doped chalcogenide glass fibers. Presented at 1st International Conference on Dielectric Photonic Devices and Systems Beyond Visible, Bari, Italy

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., Benson, T. M., & Seddon, A. B. (2018). Modeling of resonantly pumped mid-infrared Pr3+-doped chalcogenide fiber amplifier with different pumping schemes. Optics Express, 26(18), 23641-23660. https://doi.org/10.1364/OE.26.023641

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 about Modeling of resonantly pumped mid-infrared Pr3+-doped chalcogenide fiber amplifier with different pumping schemes.

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

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 about Spatiotemporal modeling of mid-infrared photoluminiscence from Terbium (III) ion doped chalcogenide-selenide multimode fibers.

Experimental investigation of mid-infrared laser action from DY3+ doped fluorozirconate fiber (2018)
Journal Article
Sójka, L., Pajewski, L., Popenda, M., Beres-Pawlik, E., Lamrini, S., Markowski, K., Osuch, T., Benson, T. M., Seddon, A. B., & Sujecki, S. (2018). Experimental investigation of mid-infrared laser action from DY3+ doped fluorozirconate fiber. IEEE Photonics Technology Letters, 30(12), 1083-1086. https://doi.org/10.1109/LPT.2018.2832009

Efficient continuous-wave laser operation at 2.982 μm is achieved with a Dy3:fluoride fiber pumped using an inhouse-built 1.1 μm ytterbium (III) fiber laser. The laser output power reached is 554 mW, with a maximum slope efficiency of 18% with respec... Read More about Experimental investigation of mid-infrared laser action from DY3+ doped fluorozirconate fiber.

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., Furniss, D., Barney, E., Benson, T., & Seddon, A. (2018). Numerical analysis of spontaneous mid-infrared light emission from terbium ion doped multimode chalcogenide fibers. Journal of Luminescence, 199, https://doi.org/10.1016/j.jlumin.2018.03.031

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 about Numerical analysis of spontaneous mid-infrared light emission from terbium ion doped multimode chalcogenide fibers.

Numerical modelling of Tb3+ doped selenide-chalcogenide multimode fibre based spontaneous emission sources (2017)
Journal Article
Sujecki, S., Sójka, L., Bereś-Pawlik, E., Sakr, H., Tang, Z., Barney, E. R., Furniss, D., Benson, T. M., & Seddon, A. B. (2017). Numerical modelling of Tb3+ doped selenide-chalcogenide multimode fibre based spontaneous emission sources. Optical and Quantum Electronics, 49(12), Article 416. https://doi.org/10.1007/s11082-017-1255-5

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 about Numerical modelling of Tb3+ doped selenide-chalcogenide multimode fibre based spontaneous emission sources.

Modelling of multimode selenide-chalcogenide glass fibre based mir spontaneous emission sources (2017)
Presentation / Conference Contribution
Sujecki, S., Sójka, L., Bereś-Pawlik, E., Piramidowicz, R., Sakr, H., Tang, Z., Barney, E., Furniss, D., Benson, T. M., & Seddon, A. B. (2017, July). Modelling of multimode selenide-chalcogenide glass fibre based mir spontaneous emission sources. Presented at 2017 19th International Conference on Transparent Optical Networks (ICTON), Girona, Spain

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 about Modelling of multimode selenide-chalcogenide glass fibre based mir spontaneous emission sources.

Determining the refractive index dispersion and thickness of hot-pressed chalcogenide thin films from an improved Swanepoel method (2017)
Journal Article
Fang, Y., Jayasuriya, D., Furniss, D., Tang, Z., Sojka, Ł., Markos, C., Sujecki, S., Seddon, A., & Benson, T. (2017). Determining the refractive index dispersion and thickness of hot-pressed chalcogenide thin films from an improved Swanepoel method. Optical and Quantum Electronics, 49, Article 237. https://doi.org/10.1007/s11082-017-1057-9

The well-known method presented by Swanepoel can be used to determine the refractive index dispersion of thin films in the near-infrared region from wavelength values at maxima and minima, only, of the transmission interference fringes. In order to e... Read More about Determining the refractive index dispersion and thickness of hot-pressed chalcogenide thin films from an improved Swanepoel method.

Measurement of non-linear optical coefficients of chalcogenide glasses near the fundamental absorption band edge (2017)
Journal Article
Romanova, E., Kuzyutkina, Y., Shiryaev, V., Abdel-Moneim, N., Furniss, D., Benson, T., Seddon, A., & Guizard, S. (2018). Measurement of non-linear optical coefficients of chalcogenide glasses near the fundamental absorption band edge. Journal of Non-Crystalline Solids, 480, https://doi.org/10.1016/j.jnoncrysol.2017.03.031

A time-resolved pump-probe method is used for the evaluation of non-linear optical coefficients of chalcogenide glasses from the As-S-Se and Ge-Se systems near their fundamental absorption band edges. The results are analyzed via comparison with the... Read More about Measurement of non-linear optical coefficients of chalcogenide glasses near the fundamental absorption band edge.

Promising emission behavior in Pr 3+ /In selenide-chalcogenide-glass small-core step index fiber (SIF) (2017)
Journal Article
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

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

Characterising refractive index dispersion in chalcogenide glasses (2016)
Presentation / Conference Contribution
Fang, Y., Sójka, L., Jayasuriya, D., Furniss, D., Tang, Z. Q., Markos, C., Sujecki, S., Seddon, A. B., & Benson, T. M. (2016, July). Characterising refractive index dispersion in chalcogenide glasses. Presented at 18th International Conference on Transparent Optical Networks, Trento, Italy

Much effort has been devoted to the study of glasses that contain the chalcogen elements (sulfur, selenium and tellurium) for photonics’ applications out to MIR wavelengths. In this paper we describe some techniques for determining the refractive ind... Read More about Characterising refractive index dispersion in chalcogenide glasses.

True mid-infrared Pr3+ absorption cross-section in a selenide-chalcogenide host-glass (2016)
Presentation / Conference Contribution
Seddon, A. B., Furniss, D., Tang, Z., Sójka, L., Benson, T. M., Caspary, R., & Sujecki, S. (2016, July). True mid-infrared Pr3+ absorption cross-section in a selenide-chalcogenide host-glass. Presented at 2016 18th International Conference on Transparent Optical Networks (ICTON), Trento, Italy

The mid-infrared (MIR) spans the 3-25 m wavelength range. Rare-earth-ion doped selenide-chalcogenide glasses are being developed for direct-emission MIR fibre lasers. The true Pr3+ absorption cross-section in the 3.5-6 µm wavelength region of a Pr3+... Read More about True mid-infrared Pr3+ absorption cross-section in a selenide-chalcogenide host-glass.

Numerical modeling of lathanide-ion doped fibre lasers operating within mid-infrared wavelength region (2016)
Presentation / Conference Contribution
Sójka, L., Furniss, D., Tang, Z., Sakr, H., Barney, E. R., Benson, T. M., Seddon, A. B., Sujecki, S., Scholle, K., Lamrini, S., & Fuhrberg, P. Numerical modeling of lathanide-ion doped fibre lasers operating within mid-infrared wavelength region. Presented at 18th International Conference on Transparent Optical Networks

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 about Numerical modeling of lathanide-ion doped fibre lasers operating within mid-infrared wavelength region.