Optical and thermal properties of rare earth containing low-phonon-energy glasses

Michael Scheffler; Johannes Kirchhof; Jens Kobelke; Kay Schuster; Anka Schwuchow

doi:10.1117/12.323376

28 September 1998 Optical and thermal properties of rare earth containing low-phonon-energy glasses

Michael Scheffler, Johannes Kirchhof, Jens Kobelke, Kay Schuster, Anka Schwuchow

Proceedings Volume 3416, Infrared Glass Optical Fibers and Their Applications; (1998) https://doi.org/10.1117/12.323376
Event: Lasers and Materials in Industry and Opto-Contact Workshop, 1998, Quebec, Canada

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.

Citation Download Citation

Michael Scheffler, Johannes Kirchhof, Jens Kobelke, Kay Schuster, and Anka Schwuchow "Optical and thermal properties of rare earth containing low-phonon-energy glasses", Proc. SPIE 3416, Infrared Glass Optical Fibers and Their Applications, (28 September 1998); https://doi.org/10.1117/12.323376

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