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Research Journal of Science and Technology
ISSN: 2349-2988(Online), 0975-4393(Print)
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Associate Professor, Dept. of Physics, Govt. College, Bilaspur, (H.P.)-174001
Compared to oxide-based glasses, vitreous materials involving chalcogens form a rather new family of glasses which have received attention, mainly because of their transmission in the mid-infrared. Indeed as low phonon compounds, these heavy-anion glasses allow the fabrication of moulded optics for infrared cameras as well as infrared fibres operating in a large spectral range. These waveguides, when correctly tapered, allows the development of a new generation of sensitive evanescent-wave optical sensors which have been used for biomedical applications. Because they contain heavy polarizable anions as well as lone-pair electrons, these glasses exhibit very large non-linear properties compared to silica and are candidates for fast optical switching and signal regeneration in telecom.
Satish Chandel. Chalcogenide Glasses. Research J. Science and Tech 5(1): Jan.-Mar.2013 page 213-215.
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