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All Outputs (54)

Predictive, Miniature Co-Extrusion of Multilayered Glass Fiber-Optic Preforms (2015)
Journal Article
Bhowmick, K., Furniss, D., Morvan, H. P., Seddon, A. B., & Benson, T. M. (2016). Predictive, Miniature Co-Extrusion of Multilayered Glass Fiber-Optic Preforms. Journal of the American Ceramic Society, 99(1), 106-114. https://doi.org/10.1111/jace.13937

A miniature co-extrusion technique, to produce a concentric multilayered glass fiber-optic preform of ~3 mm diameter, is modeled and experimentally demonstrated. A three-dimensional, incompressible, noncavitating, and nonisothermal Computational Flui... Read More about Predictive, Miniature Co-Extrusion of Multilayered Glass Fiber-Optic Preforms.

Mid-infrared fiberoptic devices and systems for in vivo medical diagnostics and surgery (2015)
Conference Proceeding
Seddon, A. B. (2015). Mid-infrared fiberoptic devices and systems for in vivo medical diagnostics and surgery. In 2015 IEEE Summer Topicals Meeting Series (SUM)doi:10.1109/PHOSST.2015.7248283

We are establishing a new paradigm in mid-infrared sensing, mapping and imaging to open up the mid-infrared for in vivo medical-diagnostics, for early diagnosis of cancer and mid-infrared endoscopic-monitoring of cancer-margins during surgery.

Low loss Ge-As-Se chalcogenide glass fiber, fabricated using extruded preform, for midinfrared photonics (2015)
Journal Article
Tang, Z., Shiryaev, V. S., Furniss, D., Sojka, L., Sujecki, S., Benson, T., …Churbanov, M. F. (2015). Low loss Ge-As-Se chalcogenide glass fiber, fabricated using extruded preform, for midinfrared photonics. Optical Materials Express, 5(8), 1722-1737. https://doi.org/10.1364/OME.5.001722

Chalcogenide glass fibers have attractive properties (e.g. wide transparent window, high optical non-linearity) and numerous potential applications in the mid-infrared (MIR) region. Low optical loss is desired and important in the development of thes... Read More about Low loss Ge-As-Se chalcogenide glass fiber, fabricated using extruded preform, for midinfrared photonics.

Mid-infrared photoluminescence in small-core fiber of praseodymium-ion doped selenide-based chalcogenide glass (2015)
Journal Article
Tang, Z., Furniss, D., Fay, M., Sakr, H., Sójka, L., Neate, N., …Seddon, A. B. (2015). Mid-infrared photoluminescence in small-core fiber of praseodymium-ion doped selenide-based chalcogenide glass. Optical Materials Express, 5(4), 870-886. https://doi.org/10.1364/OME.5.000870

© 2015 Optical Society of America. Rare earth (RE)-ion doped chalcogenide glasses are attractive for mid-infrared (MIR) fiber lasers for operation >4 μm. Our prior modeling suggests that praseodymium (Pr) is a suitable RE-ion dopant for realizing a s... Read More about Mid-infrared photoluminescence in small-core fiber of praseodymium-ion doped selenide-based chalcogenide glass.

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. https://doi.org/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 about Correlating structure with non-linear optical properties in xAs40Se60 x (1 ? x)As40S60 glasses.

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), https://doi.org/10.1039/C4RA07192A

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 about The local environment of Dy3+in selenium-rich chalcogenide glasses.

Mid-infrared supercontinuum generation to 12.5?m in large NA chalcogenide step-index fibres pumped at 4.5?m (2014)
Journal Article
Kubat, I., Agger, C. S., Møller, U., Seddon, A. B., Tang, Z., Sujecki, S., …Bang, O. (2014). Mid-infrared supercontinuum generation to 12.5μm in large NA chalcogenide step-index fibres pumped at 4.5μm. Optics Express, 22(16), 19169-19182. https://doi.org/10.1364/oe.22.019169

We present numerical modeling of mid-infrared (MIR) supercontinuum generation (SCG) in dispersion-optimized chalcogenide (CHALC) step-index fibres (SIFs) with exceptionally high numerical aperture (NA) around one, pumped with mode-locked praseodymium... Read More about Mid-infrared supercontinuum generation to 12.5?m in large NA chalcogenide step-index fibres pumped at 4.5?m.

Broadband, mid-infrared emission from Pr3+ doped GeAsGaSe chalcogenide fiber, optically clad (2014)
Journal Article
Sójka, L., Tang, Z., Furniss, D., Sakr, H., Oladeji, A., Bereś-Pawlik, E., …Sujecki, S. (2014). Broadband, mid-infrared emission from Pr3+ doped GeAsGaSe chalcogenide fiber, optically clad. Optical Materials, 36(6), 1076-1082. https://doi.org/10.1016/j.optmat.2014.01.038

We present a study of mid-infrared photoluminescence in the wavelength range 3.5–5.5lm emitted from Pr3+: GeAsGaSe core/GeAsGaSe cladding chalcogenide fiber. The Pr3+doped fiber optic preform is fabricated using extrusion and is successfully drawn to... Read More about Broadband, mid-infrared emission from Pr3+ doped GeAsGaSe chalcogenide fiber, optically clad.

First Identification of Rare-Earth Oxide Nucleation in Chalcogenide Glasses and Implications for Fabrication of Mid-Infrared Active Fibers (2013)
Journal Article
Tang, Z., Furniss, D., Fay, M., Neate, N. C., Cheng, Y., Barney, E., …Seddon, A. B. (2014). First Identification of Rare-Earth Oxide Nucleation in Chalcogenide Glasses and Implications for Fabrication of Mid-Infrared Active Fibers. Journal of the American Ceramic Society, 97(2), 432-441. https://doi.org/10.1111/jace.12732

Gallium (Ga) helps solubilize rare-earth ions in chalcogenide glasses, but has been found to form the dominant crystallizing selenide phase in bulk glass in our previous work. Here, the crystallization behavior is compared of as-annealed 0–3000 ppmw... Read More about First Identification of Rare-Earth Oxide Nucleation in Chalcogenide Glasses and Implications for Fabrication of Mid-Infrared Active Fibers.

Study of mid-infrared laser action in chalcogenide rare earth doped glass with Dy3+, Pr3+ and Tb3+ (2012)
Journal Article
Sójka, L., Tang, Z., Zhu, H., Bereś-Pawlik, E., Furniss, D., Seddon, A. B., …Sujecki, S. (2012). Study of mid-infrared laser action in chalcogenide rare earth doped glass with Dy3+, Pr3+ and Tb3+. Optical Materials Express, 2(11), https://doi.org/10.1364/OME.2.001632

We present a study of chalcogenide glass fiber lasers doped with Dy3+, Pr3+ or Tb3+ that would operate in the mid-infrared wavelength range. A set of chalcogenide glass samples doped with different concentrations of rare earth ions is fabricated.... Read More about Study of mid-infrared laser action in chalcogenide rare earth doped glass with Dy3+, Pr3+ and Tb3+.