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29 June 2001 Optical properties of As2S3 and As2Se3 glasses doped with Dy, Sm, and Mn
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Proceedings Volume 4430, ROMOPTO 2000: Sixth Conference on Optics; (2001) https://doi.org/10.1117/12.432868
Event: ROMOPTO 2000: Sixth Conference on Optics, 2000, Bucharest, Romania
Abstract
The effect of low amounts of dysprosium, samarium and manganese (0.1-0.5 at.%) on structure and optical properties of chalcogenide glassy semiconductors As2S3 and As2Se3 is investigated. The fundamental absorption edge shifts to longer wavelength with doping; the largest shift was observed for As2S3 glasses doped with Dy and Mn. A correlation of the properties with medium range order and electronegativity of impurity atoms was revealed. Photodarkening relaxation under light exposure of a-As2Se3 amorphous films doped with 0.5 at.% of metals Sn, Mn, Sm and Dy was studied in dependence on the impurity and thermal treating. Both factors reduce photodarkening and the degree of reduction depends on the sort of impurity. The relaxation process may be described by a stretched exponential with the dispersive parameter 0.5
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Andrei M. Andriesh, Mihai S. Iovu, Sergiu D. Shutov, Angela B. Seddon, David Furniss, and Mihai A. Popescu "Optical properties of As2S3 and As2Se3 glasses doped with Dy, Sm, and Mn", Proc. SPIE 4430, ROMOPTO 2000: Sixth Conference on Optics, (29 June 2001); https://doi.org/10.1117/12.432868
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