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Proceedings Paper

Optical and thermal properties of rare earth containing low-phonon-energy glasses
Author(s): Michael Scheffler; Johannes Kirchhof; Jens Kobelke; Kay Schuster; Anka Schwuchow
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Paper Abstract

Doping of arsenic sulfide with small amounts of germanium and gallium ca be used to improve the rare-earth ion solubility, whereby optical nd thermal properties are modified.Here the influence of germanium and gallium on refractive index, fluorescence and glass transition temperature is systematically studied and discussed. It is shown that material properties suitable for variable lightguide structures can be tailored. In addition, we present our studies of properties of lead germanate glasses. Variations of the matrix composition were made an the effects in glass transition temperature, crystallization behavior, refractive index, solubility of rare earths and UV-VIS-IR transmission were studied. Reducing the lead content and partial substitution of oxides by fluorides causes a shift of the optical bandgap of bulk material. First fluorescence investigations on Tm3+ doped lead germanate glasses show blue, red and IR emission under 980 nm excitation.

Paper Details

Date Published: 28 September 1998
PDF: 10 pages
Proc. SPIE 3416, Infrared Glass Optical Fibers and Their Applications, (28 September 1998); doi: 10.1117/12.323376
Show Author Affiliations
Michael Scheffler, Institut fuer Physikalische Hochtechnologie e.V. Jena (Germany)
Johannes Kirchhof, Institut fuer Physikalische Hochtechnologie e.V. Jena (Germany)
Jens Kobelke, Institut fuer Physikalische Hochtechnologie e.V. Jena (Germany)
Kay Schuster, Institut fuer Physikalische Hochtechnologie e.V. Jena (Germany)
Anka Schwuchow, Institut fuer Physikalische Hochtechnologie e.V. Jena (Germany)


Published in SPIE Proceedings Vol. 3416:
Infrared Glass Optical Fibers and Their Applications
Mohammed Saad, Editor(s)

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