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A B Seddon - One of the best experts on this subject based on the ideXlab platform.
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mid infrared photoluminescence in small Core fiber of praseodymium ion doped selenide based chalcogenide glass
Optical Materials Express, 2015Co-Authors: Zhuoqi Tang, D Furniss, H Sakr, L Sojka, Nigel C Neate, Nicola Weston, S Sujecki, T M Benson, A B SeddonAbstract: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 selenide-based, chalcogenide-glass, step index fiber (SIF) MIR fiber laser operating at 4-5 μm wavelength. Fabrication of RE-ion doped chalcogenide glass fiber, especially with a small Core, is a demanding process because crystallization must be avoided during the heat treatments required to effect shaping. Here, a 500 ppmw (parts per million parts, by weight) Pr3+-doped Ge-As-Ga-Se glass SIF with a 10 μm or 15 μm Diameter Core is reported; the cladding glass is Ge-As-Ga-Se-S. The multistage process to produce the fiber is outlined. Thermal and optical properties of the Core/clad. glass pair, and the crystalline/amorphous nature and optical behavior of the small Core fiber are reported. MIR photoluminescence and lifetime of a RE-ion doped chalcogenide glass small Core fiber are reported for the first time.
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mid infrared photoluminescence in small Core fiber of praseodymium ion doped selenide based chalcogenide glass
Optical Materials Express, 2015Co-Authors: Zhuoqi Tang, D Furniss, H Sakr, L Sojka, Nigel C Neate, Nicola Weston, S Sujecki, T M Benson, M W Fay, A B SeddonAbstract: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 selenide-based, chalcogenide-glass, step index fiber (SIF) MIR fiber laser operating at 4-5 μm wavelength. Fabrication of RE-ion doped chalcogenide glass fiber, especially with a small Core, is a demanding process because crystallization must be avoided during the heat treatments required to effect shaping. Here, a 500 ppmw (parts per million parts, by weight) Pr3+-doped Ge-As-Ga-Se glass SIF with a 10 μm or 15 μm Diameter Core is reported; the cladding glass is Ge-As-Ga-Se-S. The multistage process to produce the fiber is outlined. Thermal and optical properties of the Core/clad. glass pair, and the crystalline/amorphous nature and optical behavior of the small Core fiber are reported. MIR photoluminescence and lifetime of a RE-ion doped chalcogenide glass small Core fiber are reported for the first time.
Zhuoqi Tang - One of the best experts on this subject based on the ideXlab platform.
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mid infrared photoluminescence in small Core fiber of praseodymium ion doped selenide based chalcogenide glass
Optical Materials Express, 2015Co-Authors: Zhuoqi Tang, D Furniss, H Sakr, L Sojka, Nigel C Neate, Nicola Weston, S Sujecki, T M Benson, A B SeddonAbstract: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 selenide-based, chalcogenide-glass, step index fiber (SIF) MIR fiber laser operating at 4-5 μm wavelength. Fabrication of RE-ion doped chalcogenide glass fiber, especially with a small Core, is a demanding process because crystallization must be avoided during the heat treatments required to effect shaping. Here, a 500 ppmw (parts per million parts, by weight) Pr3+-doped Ge-As-Ga-Se glass SIF with a 10 μm or 15 μm Diameter Core is reported; the cladding glass is Ge-As-Ga-Se-S. The multistage process to produce the fiber is outlined. Thermal and optical properties of the Core/clad. glass pair, and the crystalline/amorphous nature and optical behavior of the small Core fiber are reported. MIR photoluminescence and lifetime of a RE-ion doped chalcogenide glass small Core fiber are reported for the first time.
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mid infrared photoluminescence in small Core fiber of praseodymium ion doped selenide based chalcogenide glass
Optical Materials Express, 2015Co-Authors: Zhuoqi Tang, D Furniss, H Sakr, L Sojka, Nigel C Neate, Nicola Weston, S Sujecki, T M Benson, M W Fay, A B SeddonAbstract: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 selenide-based, chalcogenide-glass, step index fiber (SIF) MIR fiber laser operating at 4-5 μm wavelength. Fabrication of RE-ion doped chalcogenide glass fiber, especially with a small Core, is a demanding process because crystallization must be avoided during the heat treatments required to effect shaping. Here, a 500 ppmw (parts per million parts, by weight) Pr3+-doped Ge-As-Ga-Se glass SIF with a 10 μm or 15 μm Diameter Core is reported; the cladding glass is Ge-As-Ga-Se-S. The multistage process to produce the fiber is outlined. Thermal and optical properties of the Core/clad. glass pair, and the crystalline/amorphous nature and optical behavior of the small Core fiber are reported. MIR photoluminescence and lifetime of a RE-ion doped chalcogenide glass small Core fiber are reported for the first time.
Brian L Mealey - One of the best experts on this subject based on the ideXlab platform.
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evaluation of healing following tooth extraction with ridge preservation using cortical versus cancellous freeze dried bone allograft
Journal of Periodontology, 2014Co-Authors: Adam J Eskow, Brian L MealeyAbstract:Background: The objective of this study is to compare histologic and clinical healing following tooth extraction and ridge preservation with either cortical or cancellous freeze-dried bone allograft (FDBA) in non-molar extraction sockets.Methods: Forty patients requiring implant placement were enrolled, with 20 patients randomly assigned to each group (cortical versus cancellous FDBA). All of the allograft materials were obtained from the same donor to control for variability between donors and processing. Patients returned after 17 to 21 weeks (average: 18.2 weeks), and a 2-mm-Diameter Core biopsy was obtained before implant placement. Histomorphometric analysis was performed to determine percentage of new bone formation, residual graft material, and non-mineralized connective tissue (CT)/other material. Clinical measurements of ridge dimensions were taken at the time of tooth extraction and again at implant placement.Results: There was no significant difference in new bone formation between the cortical...
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histologic comparison of healing after tooth extraction with ridge preservation using mineralized versus demineralized freeze dried bone allograft
Journal of Periodontology, 2012Co-Authors: Robert Wood, Brian L MealeyAbstract:Background: Allografts, such as demineralized freeze-dried bone allograft (DFDBA) and mineralized freeze-dried bone allograft (FDBA) are commonly used by clinicians for ridge preservation procedures. The primary objective of this study is to histologically evaluate and compare the healing of non-molar extraction sockets grafted with DFDBA versus FDBA for ridge preservation. The secondary aim of this study is to compare dimensional changes in ridge height and width after grafting with these two materials.Materials: Forty patients were randomly divided into two groups of 20. Extraction sockets were filled with either FDBA or DFDBA. To minimize variables associated with the organ donor and with tissue processing, all of the graft material was procured from a single donor; the only difference in the two materials was the percentage mineralization of the final bone graft. A 2-mm-Diameter Core biopsy was taken from each grafted site ≈19 weeks after grafting. Histomorphometric analysis was performed to determine...
L Sojka - One of the best experts on this subject based on the ideXlab platform.
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mid infrared photoluminescence in small Core fiber of praseodymium ion doped selenide based chalcogenide glass
Optical Materials Express, 2015Co-Authors: Zhuoqi Tang, D Furniss, H Sakr, L Sojka, Nigel C Neate, Nicola Weston, S Sujecki, T M Benson, A B SeddonAbstract: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 selenide-based, chalcogenide-glass, step index fiber (SIF) MIR fiber laser operating at 4-5 μm wavelength. Fabrication of RE-ion doped chalcogenide glass fiber, especially with a small Core, is a demanding process because crystallization must be avoided during the heat treatments required to effect shaping. Here, a 500 ppmw (parts per million parts, by weight) Pr3+-doped Ge-As-Ga-Se glass SIF with a 10 μm or 15 μm Diameter Core is reported; the cladding glass is Ge-As-Ga-Se-S. The multistage process to produce the fiber is outlined. Thermal and optical properties of the Core/clad. glass pair, and the crystalline/amorphous nature and optical behavior of the small Core fiber are reported. MIR photoluminescence and lifetime of a RE-ion doped chalcogenide glass small Core fiber are reported for the first time.
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mid infrared photoluminescence in small Core fiber of praseodymium ion doped selenide based chalcogenide glass
Optical Materials Express, 2015Co-Authors: Zhuoqi Tang, D Furniss, H Sakr, L Sojka, Nigel C Neate, Nicola Weston, S Sujecki, T M Benson, M W Fay, A B SeddonAbstract: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 selenide-based, chalcogenide-glass, step index fiber (SIF) MIR fiber laser operating at 4-5 μm wavelength. Fabrication of RE-ion doped chalcogenide glass fiber, especially with a small Core, is a demanding process because crystallization must be avoided during the heat treatments required to effect shaping. Here, a 500 ppmw (parts per million parts, by weight) Pr3+-doped Ge-As-Ga-Se glass SIF with a 10 μm or 15 μm Diameter Core is reported; the cladding glass is Ge-As-Ga-Se-S. The multistage process to produce the fiber is outlined. Thermal and optical properties of the Core/clad. glass pair, and the crystalline/amorphous nature and optical behavior of the small Core fiber are reported. MIR photoluminescence and lifetime of a RE-ion doped chalcogenide glass small Core fiber are reported for the first time.
H Sakr - One of the best experts on this subject based on the ideXlab platform.
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mid infrared photoluminescence in small Core fiber of praseodymium ion doped selenide based chalcogenide glass
Optical Materials Express, 2015Co-Authors: Zhuoqi Tang, D Furniss, H Sakr, L Sojka, Nigel C Neate, Nicola Weston, S Sujecki, T M Benson, A B SeddonAbstract: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 selenide-based, chalcogenide-glass, step index fiber (SIF) MIR fiber laser operating at 4-5 μm wavelength. Fabrication of RE-ion doped chalcogenide glass fiber, especially with a small Core, is a demanding process because crystallization must be avoided during the heat treatments required to effect shaping. Here, a 500 ppmw (parts per million parts, by weight) Pr3+-doped Ge-As-Ga-Se glass SIF with a 10 μm or 15 μm Diameter Core is reported; the cladding glass is Ge-As-Ga-Se-S. The multistage process to produce the fiber is outlined. Thermal and optical properties of the Core/clad. glass pair, and the crystalline/amorphous nature and optical behavior of the small Core fiber are reported. MIR photoluminescence and lifetime of a RE-ion doped chalcogenide glass small Core fiber are reported for the first time.
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mid infrared photoluminescence in small Core fiber of praseodymium ion doped selenide based chalcogenide glass
Optical Materials Express, 2015Co-Authors: Zhuoqi Tang, D Furniss, H Sakr, L Sojka, Nigel C Neate, Nicola Weston, S Sujecki, T M Benson, M W Fay, A B SeddonAbstract: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 selenide-based, chalcogenide-glass, step index fiber (SIF) MIR fiber laser operating at 4-5 μm wavelength. Fabrication of RE-ion doped chalcogenide glass fiber, especially with a small Core, is a demanding process because crystallization must be avoided during the heat treatments required to effect shaping. Here, a 500 ppmw (parts per million parts, by weight) Pr3+-doped Ge-As-Ga-Se glass SIF with a 10 μm or 15 μm Diameter Core is reported; the cladding glass is Ge-As-Ga-Se-S. The multistage process to produce the fiber is outlined. Thermal and optical properties of the Core/clad. glass pair, and the crystalline/amorphous nature and optical behavior of the small Core fiber are reported. MIR photoluminescence and lifetime of a RE-ion doped chalcogenide glass small Core fiber are reported for the first time.