Bulk-film structural differences of chalcogenide glasses probed in situ by near-infrared waveguide Raman spectroscopy

    Authors

    A. Schulte; C. Rivero; K. Richardson; K. Turcotte; V. Hamel; A. Villeneuve; T. Galstian;R. Vallee

    Abbreviated Journal Title

    Opt. Commun.

    Keywords

    optical materials; glasses; Raman spectroscopy; integrated optics; thin; films; FABRICATION; Optics

    Abstract

    Thin film devices based on chalcogenide glasses (ChGs) are attractive for integrated optics applications due to their good infrared transmission and high nonlinear Kerr effects. To reveal structural variations which impact physical properties depending on material processing and in-use laser conditions we employ waveguide Raman spectroscopy (WRS) in ChG thin films and fibers using excitation in the near-infrared (NIR). The Raman spectra reveal significant microstructural differences between fibers drawn from bulk As2S3 glasses and unannealed films in that the latter contain As4S4 molecular subunits, The high signal-to-noise ratio and the absence of undesired photoreactions make NIR WRS a versatile new approach to in situ characterization of infrared waveguide devices. (C) 2001 Elsevier Science B.V. All rights reserved.

    Journal Title

    Optics Communications

    Volume

    198

    Issue/Number

    1-3

    Publication Date

    1-1-2001

    Document Type

    Article

    Language

    English

    First Page

    125

    Last Page

    128

    WOS Identifier

    WOS:000171571900018

    ISSN

    0030-4018

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