Structure and chemical studies of As2S3 glasses used for waveguide applications

    Authors

    S. Seal; K. A. Richardson; C. Lopez; A. Graham; D. K. Verma; A. Saliminia; T. Galstian;A. Villeneuve

    Abbreviated Journal Title

    Phys. Chem. Glasses

    Keywords

    X-RAY ABSORPTION; CHALCOGENIDE GLASSES; SURFACE-CHEMISTRY; FIBERS; SPECTROSCOPY; SILICATES; SULFIDE; ORDER; Chemistry, Physical; Materials Science, Ceramics

    Abstract

    Chalcogenide glasses based on As2S3 have been studied extensively due to their optical and electronic properties and have been examined recently for use in optical waveguide components. Structural and chemical variations imposed by processing conditions (film deposition or fibre drawing) can lead to changes in linear and nonlinear optical properties as well as other physical properties, This paper reports our current results on x-ray photoelectron spectroscopy (XPS) studies of the resulting chemical composition at the film surface as compared to the parent bulk glass and the corresponding variation in the nature of chemical bonds and electronic structure. Special emphasis is focused on identification of bridging versus nonbridging sulphur atomic using XPS chemical shifts. Variations, where present, in surface chemistry due to the effect of x-ray exposure, sputtering and laser irradiation oil bulk and thin film As2S3 samples are reported.

    Journal Title

    Physics and Chemistry of Glasses

    Volume

    43

    Issue/Number

    1

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    59

    Last Page

    65

    WOS Identifier

    WOS:000175823800011

    ISSN

    0031-9090

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