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SM ISO690:2012 YOVU, M., SHUTOV, Serghei, ANDRIESH, Andrei, KAMITSOS, Efstratios I., VARSAMIS, Christos Platon E., SEDDON, Angela B., FURNISS, D., POPESCU, Mihai A.. Spectroscopic studies of bulk As2S3 glasses and amorphous films doped with Dy, Sm and Mn. In: Proceedings of SPIE - The International Society for Optical Engineering, Ed. 11, 24-28 septembrie 2001, Kazan. Bellingham, Washington: SPIE, 2002, Ediția 11, Vol.4766, pp. 97-105. ISBN 0819445339. ISSN 0277786X. DOI: https://doi.org/10.1117/12.475321 |
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Proceedings of SPIE - The International Society for Optical Engineering Ediția 11, Vol.4766, 2002 |
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Simpozionul "Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions" 11, Kazan, Rusia, 24-28 septembrie 2001 | |||||||
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DOI:https://doi.org/10.1117/12.475321 | |||||||
Pag. 97-105 | |||||||
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The effect of rare earth (Dy and Sm) and transition metal (Mn) luminescent impurities on the optical properties of As2S3 glass is studied in a wide spectral region. The Raman, infrared, 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 (Dy, Sm) or red (Mn) shift depending on the electronegativity 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 behaviour of the impurities in the glass. |
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Cuvinte-cheie chalcogenide glassy semiconductors, optical absorption, Rare-earth metals |
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