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Proceedings Paper

Spectroscopic studies of bulk AS2S3 glasses and amorphous films doped with Dy, Sm and Mn
Author(s): Mihai S. Iovu; Sergiu D. Shutov; Andrei M. Andriesh; E. I. Kamitsos; C. P.E. Varsamis; Angela B. Seddon; David Furniss; Mihai A. Popescu
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Paper Abstract

The effect of rare earth and transition metal luminescent impurities on the optical properties of As2S3 glass is studied in a wide spectral region. The Raman, IR, band- to-band and edge absorption spectroscopies are employed to obtain information about the incorporation of impurity ions in the host glass structure and the corresponding changes in intrinsic optical characteristics. The effects of light- soaking and thermal treatment on the doped As2S3 glasses were examined as well. In the fundamental absorption region a reflectivity maximum at 2.98 eV shows blue or red shift depending on the electro negativity of the impurity, in accordance with the corresponding variations of the glass structure. Near the edge absorption the impurity affects strongly the slope and the magnitude of the weak absorption tail. The observed effects of metal dopants on the As2S3 glass are discussed in connection with the expected behavior oft he impurities in the glass.

Paper Details

Date Published: 12 July 2002
PDF: 9 pages
Proc. SPIE 4766, XI Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions, (12 July 2002); doi: 10.1117/12.475321
Show Author Affiliations
Mihai S. Iovu, Academy of Sciences of Moldova (Moldova)
Sergiu D. Shutov, Academy of Sciences of Moldova (Moldova)
Andrei M. Andriesh, Academy of Sciences of Moldova (Moldova)
E. I. Kamitsos, National Hellenic Research Foundation (Greece)
C. P.E. Varsamis, National Hellenic Research Foundation (Greece)
Angela B. Seddon, Univ. of Nottingham (United Kingdom)
David Furniss, Univ. of Nottingham (United Kingdom)
Mihai A. Popescu, National Institute for Research in Physics of Materials (Romania)


Published in SPIE Proceedings Vol. 4766:
XI Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions

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