The Experts below are selected from a list of 249 Experts worldwide ranked by ideXlab platform
G. Maze - One of the best experts on this subject based on the ideXlab platform.
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UV-Induced index changes in undoped fluoride glass
Journal of Lightwave Technology, 2005Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Undoped fluoride glass slides have been exposed to pulsed 193-nm ultraviolet (UV) irradiation. Their absorption changes have been measured to evaluate UV-induced index changes using Kramers-Kronig Relation. A layer-peeling polishing technique was applied to characterize the local UV-induced index change of highly absorbing glass. Index changes up to 1.75 x 10^-4 have been evaluated with this method in fluorozirco-aluminate glass. Fluoroaluminate and fluorozirconate glass showed only small index changes of about 2.0 x 10^-6 and 2.6 x 10^-6 at a wavelength of 1550 nm.
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UV-induced index changes in Undoped Fluoride glass
Journal of Lightwave Technology, 2005Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Undoped fluoride glass slides have been exposed to pulsed 193-nm ultraviolet (UV) irradiation. Their absorption changes have been measured to evaluate UV-induced index changes using Kramers-Kronig Relation. A layer-peeling polishing technique was applied to characterize the local UV-induced index change of highly absorbing glass. Index changes up to 1.75/spl times/10/sup -4/ have been evaluated with this method in fluorozirco-aluminate glass. Fluoroaluminate and fluorozirconate glass showed only small index changes of about 2.0/spl times/10/sup -6/ and 2.6/spl times/10/sup -6/ at a wavelength of 1550 nm.
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UV-induced index changes in Ce-doped and undoped fluoride glass
Bragg Gratings Photosensitivity and Poling in Glass Waveguides, 2003Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Ce-doped and undoped fluoride glasses have been exposed to UV-irradiation. Pulsed 193 and 248 nm as well as cw 244 nm UV-induced index changes are evaluated using Kramers-Kronig Relation and a layer-peeling polishing technique.
Mary Zeller - One of the best experts on this subject based on the ideXlab platform.
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UV-Induced index changes in undoped fluoride glass
Journal of Lightwave Technology, 2005Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Undoped fluoride glass slides have been exposed to pulsed 193-nm ultraviolet (UV) irradiation. Their absorption changes have been measured to evaluate UV-induced index changes using Kramers-Kronig Relation. A layer-peeling polishing technique was applied to characterize the local UV-induced index change of highly absorbing glass. Index changes up to 1.75 x 10^-4 have been evaluated with this method in fluorozirco-aluminate glass. Fluoroaluminate and fluorozirconate glass showed only small index changes of about 2.0 x 10^-6 and 2.6 x 10^-6 at a wavelength of 1550 nm.
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UV-induced index changes in Undoped Fluoride glass
Journal of Lightwave Technology, 2005Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Undoped fluoride glass slides have been exposed to pulsed 193-nm ultraviolet (UV) irradiation. Their absorption changes have been measured to evaluate UV-induced index changes using Kramers-Kronig Relation. A layer-peeling polishing technique was applied to characterize the local UV-induced index change of highly absorbing glass. Index changes up to 1.75/spl times/10/sup -4/ have been evaluated with this method in fluorozirco-aluminate glass. Fluoroaluminate and fluorozirconate glass showed only small index changes of about 2.0/spl times/10/sup -6/ and 2.6/spl times/10/sup -6/ at a wavelength of 1550 nm.
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UV-induced index changes in Ce-doped and undoped fluoride glass
Bragg Gratings Photosensitivity and Poling in Glass Waveguides, 2003Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Ce-doped and undoped fluoride glasses have been exposed to UV-irradiation. Pulsed 193 and 248 nm as well as cw 244 nm UV-induced index changes are evaluated using Kramers-Kronig Relation and a layer-peeling polishing technique.
Yukio Takahashi - One of the best experts on this subject based on the ideXlab platform.
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use of kramers Kronig Relation in phase retrieval calculation in x ray spectro ptychography
Optics Express, 2017Co-Authors: Makoto Hirose, Kei Shimomura, Nicolas Burdet, Yukio TakahashiAbstract:Coherent diffraction imaging (CDI) is a method for reconstructing the complex-valued image of an object from diffraction intensities by using iterative phasing methods. X-ray ptychography is a scanning type of CDI using X-rays, allowing us to visualize the complex transmission function of an extended specimen. We here propose the use of the Kramers–Kronig Relation (KKR) as an additional constraint in phase retrieval algorithms for multiple-energy X-ray ptychography using the absorption edge of a specific element. A numerical simulation showed that the speed of convergence was increased by using the improved algorithm with the KKR. We successfully demonstrated its usefulness in a proof-of-principle experiment at SPring-8. The present algorithm is particularly useful for imaging X-ray absorption fine structures of a specific element buried within thick samples by hard X-ray spectro-ptychography.
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Use of Kramers–Kronig Relation in phase retrieval calculation in X-ray spectro-ptychography
Optics Express, 2017Co-Authors: Makoto Hirose, Kei Shimomura, Nicolas Burdet, Yukio TakahashiAbstract:Coherent diffraction imaging (CDI) is a method for reconstructing the complex-valued image of an object from diffraction intensities by using iterative phasing methods. X-ray ptychography is a scanning type of CDI using X-rays, allowing us to visualize the complex transmission function of an extended specimen. We here propose the use of the Kramers–Kronig Relation (KKR) as an additional constraint in phase retrieval algorithms for multiple-energy X-ray ptychography using the absorption edge of a specific element. A numerical simulation showed that the speed of convergence was increased by using the improved algorithm with the KKR. We successfully demonstrated its usefulness in a proof-of-principle experiment at SPring-8. The present algorithm is particularly useful for imaging X-ray absorption fine structures of a specific element buried within thick samples by hard X-ray spectro-ptychography.
Hans Georg Limberger - One of the best experts on this subject based on the ideXlab platform.
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UV-Induced index changes in undoped fluoride glass
Journal of Lightwave Technology, 2005Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Undoped fluoride glass slides have been exposed to pulsed 193-nm ultraviolet (UV) irradiation. Their absorption changes have been measured to evaluate UV-induced index changes using Kramers-Kronig Relation. A layer-peeling polishing technique was applied to characterize the local UV-induced index change of highly absorbing glass. Index changes up to 1.75 x 10^-4 have been evaluated with this method in fluorozirco-aluminate glass. Fluoroaluminate and fluorozirconate glass showed only small index changes of about 2.0 x 10^-6 and 2.6 x 10^-6 at a wavelength of 1550 nm.
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UV-induced index changes in Undoped Fluoride glass
Journal of Lightwave Technology, 2005Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Undoped fluoride glass slides have been exposed to pulsed 193-nm ultraviolet (UV) irradiation. Their absorption changes have been measured to evaluate UV-induced index changes using Kramers-Kronig Relation. A layer-peeling polishing technique was applied to characterize the local UV-induced index change of highly absorbing glass. Index changes up to 1.75/spl times/10/sup -4/ have been evaluated with this method in fluorozirco-aluminate glass. Fluoroaluminate and fluorozirconate glass showed only small index changes of about 2.0/spl times/10/sup -6/ and 2.6/spl times/10/sup -6/ at a wavelength of 1550 nm.
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UV-induced index changes in Ce-doped and undoped fluoride glass
Bragg Gratings Photosensitivity and Poling in Glass Waveguides, 2003Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Ce-doped and undoped fluoride glasses have been exposed to UV-irradiation. Pulsed 193 and 248 nm as well as cw 244 nm UV-induced index changes are evaluated using Kramers-Kronig Relation and a layer-peeling polishing technique.
Theo Lasser - One of the best experts on this subject based on the ideXlab platform.
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UV-Induced index changes in undoped fluoride glass
Journal of Lightwave Technology, 2005Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Undoped fluoride glass slides have been exposed to pulsed 193-nm ultraviolet (UV) irradiation. Their absorption changes have been measured to evaluate UV-induced index changes using Kramers-Kronig Relation. A layer-peeling polishing technique was applied to characterize the local UV-induced index change of highly absorbing glass. Index changes up to 1.75 x 10^-4 have been evaluated with this method in fluorozirco-aluminate glass. Fluoroaluminate and fluorozirconate glass showed only small index changes of about 2.0 x 10^-6 and 2.6 x 10^-6 at a wavelength of 1550 nm.
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UV-induced index changes in Undoped Fluoride glass
Journal of Lightwave Technology, 2005Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Undoped fluoride glass slides have been exposed to pulsed 193-nm ultraviolet (UV) irradiation. Their absorption changes have been measured to evaluate UV-induced index changes using Kramers-Kronig Relation. A layer-peeling polishing technique was applied to characterize the local UV-induced index change of highly absorbing glass. Index changes up to 1.75/spl times/10/sup -4/ have been evaluated with this method in fluorozirco-aluminate glass. Fluoroaluminate and fluorozirconate glass showed only small index changes of about 2.0/spl times/10/sup -6/ and 2.6/spl times/10/sup -6/ at a wavelength of 1550 nm.
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UV-induced index changes in Ce-doped and undoped fluoride glass
Bragg Gratings Photosensitivity and Poling in Glass Waveguides, 2003Co-Authors: Mary Zeller, Theo Lasser, Hans Georg Limberger, G. MazeAbstract:Ce-doped and undoped fluoride glasses have been exposed to UV-irradiation. Pulsed 193 and 248 nm as well as cw 244 nm UV-induced index changes are evaluated using Kramers-Kronig Relation and a layer-peeling polishing technique.
