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Showing 1 to 17 of 17 for “"chalcogenide glasses"”.
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Modified chalcogenide glasses for optical device applications
… modification of gallium lanthanum sulphide (GLS) glasses. Firstly the addition of transition metal ions as dopants is examined and their potential for use as active optical materials is explored. It is also argued that the spectroscopic analysis of transition metal ions is a useful tool for …
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Modified chalcogenide glasses for optical device applications
… modification ofgallium lanthanum sulphide (GLS) glasses. Firstly the addition of transition metal ionsas dopants is examined and their potential for use as active optical materials is explored.It is also argued that the spectroscopic analysis of transition metal ions is a useful toolfor …
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Chalcogenide glasses for advanced photonic and photovoltaic applications
Chalcogenide glasses, namely the amorphous compounds containing sulfur, selenium, and/or tellurium, have emerged as a promising material candidate for integrated photonics given their wide infrared transparency window, low processing temperature, almost infinite capacity for composition alloying, …
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Transient transport and optical studies of chalcogenide glasses
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1985.
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Broad excitation of rare earth dopants in chalcogenide glasses
… broad band excitation effect in rare earth-doped chalcogenide glasses. Photoluminescence excitation (PLE) bands with a width of ~450 nm have been observed which efficiently excite a number of rare earth emission lines. This effect is attributed to the absorption of excitation light by the host …
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Broad Band Excitation of Rare-Earth Dopants in Chalcogenide Glasses
… bands excitation effect in rare earth-doped chalcogenide glasses. Photoluminescence excitation (PLE) bands with a width of $\sim$450 nm have been observed which efficiently excite a number of rare earth emission lines. This effect is attributed to the absorption of excitation light by the …
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Photoinduced Optical Integrated Circuits and Bulk Photonic Devices in Chalcogenide Glasses
Reliability and stability issues have, for the first time, been studied in this materials system. Preferred regimes of operation are defined, and accelerated aging studies are used to predict device lifetimes.
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Development of germanium based sulphide glass by chemical vapour deposition (CVD)
Chalcogenide glasses, especially sulphide glasses, are becoming more and more important for the fabrication of optoelectronic devices in part because of the high nonlinearity, strong photosensitivity and several other unique properties they have. Chalcogenide glasses are normally fabricated by a …
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Planar chalcogenide glass materials and devices
… need in the field of biochemical sensing. Chalcogenide glasses have been identified as the material of choice for sensing due to their wide infrared transparency window; on the device side, we have fabricated optical resonator devices that dramatically amplify the photon-molecule …
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Evaluation Of The Photo-induced Structural Mechanisms In Chalcogenide
Chalcogenide glasses and their use in a wide range of optical, electronic and memory applications, has created a need for a more thorough understanding of material property variation as a function of composition and in geometries representative of actual devices. This study evaluates compositional …
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Chalcogenide Glass on Layered van der Waals Crystals for Integrated Photonic Devices
… Recently, the integration of vdW materials with chalcogenide glasses (ChG) has been developed for near and mid-infrared integrated photonic applications. This ChG-on-vdW platform enables new device architectures that can better utilize vdW material’s strong anisotropy and accelerates prototyping. …
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High speed nonlinear optical components for next-generation optical communications
… niobate (PPLN), highly nonlinear fibre (HNLF) or chalcogenide glasses. However, nonlinear optical (NLO) components such as semiconductor optical amplifiers (SOAs), electroabsorption modulators (EAMs) and silicon nanowires are the most promising candidates as all-optical switching elements …
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Fabrication and Testing of Non-volatile Memory Using Chalcogenide Glass Thin Film
Silver doped chalcogenide glasses, such as Ag-Ge-Se, display resistance switching behavior under low threshold voltages, which makes these materials very promising in non-volatile memory applications. In this thesis, ternary glasses of composition (GeS<sub>3</sub>)<sub>1-x</sub>Ag<sub>x</sub> (x = …
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Chalcogenide glass materials for integrated infrared photonics
Chalcogenide glasses (ChGs) are amorphous compounds containing the chalcogen elements (S, Se, Te) and exhibit wide infrared transparency windows. They are easy to synthesize in bulk and thin film forms and their compositional flexibility allows tuning of optical properties such as refractive index …
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Investigation of High-Nonlinearity Glass Fibers for Potential Applications in Ultrafast Nonlinear Fiber Devices
… materials of Litharge, Bismite, Tellurite, and Chalcogenide glasses have been considered. Although they have high nonlinearities, they also have high group-velocity dispersion and high losses deteriorating the performance of nonlinear fiber devices seriously. The aim of this work is to …
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Structure and Glass Transition Behavior of As-Rich As-Se Glasses: Modeling and Experiment
Chalcogenide glasses have been widely used in various technologies due to their wide IR transparency and good glass forming ability. Arsenic selenide glasses (AsxSe100-x), in particular, have been readily adopted for IR applications and widely studied to provide insights into fundamental …