Effect of IR femtosecond laser irradiation on the structure of new sulfo-selenide glasses

    Authors

    L. Petit; N. Carlie; T. Anderson; M. Couzi; J. Choi; M. Richardson;K. C. Richardson

    Comments

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    Abbreviated Journal Title

    Opt. Mater.

    Keywords

    germanium-based sulfide glass; Raman spectroscopy; femtosecond laser; irradiation; photo-expansion; photo-sensitivity; GE-SB-S; CHALCOGENIDE GLASSES; WAVE-GUIDES; OPTICAL-PROPERTIES; RAMAN-SPECTRA; SYSTEM; FABRICATION; GRATINGS; PULSES; SILICA; Materials Science, Multidisciplinary; Optics

    Abstract

    We report results of a systematic study to evaluate for the first time, the relationship between compositional variation and photosensitivity of new glasses in the Ge-Sb-S/Se system with varying ratios of chalcogen (S/Se), upon IR femstosecond laser exposure. It is shown that the photo-sensitivity of the glass depends on the glass composition and that IR femtosecond laser irradiation in this system results in near-surface photo-expansion. Glass structure modification as a function of S/Se ratio and the influence of laser dose has been characterized using micro-Raman spectroscopy and is correlated to the resulting photo-expansion. As compared to other widely studied binary chalcogenide glass systems, photo-expansion was found to vary with the Se content. Such modification opens the pathway towards the laser writing of photonic devices in the surface of the material. (c) 2006 Elsevier B.V. All rights reserved.

    Journal Title

    Optical Materials

    Volume

    29

    Issue/Number

    8

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    1075

    Last Page

    1083

    WOS Identifier

    WOS:000245847200031

    ISSN

    0925-3467

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