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Proceedings Paper

Gamma irradiation effect on the optical properties of GexSb40-xS60 chalcogenide glasses
Author(s): Oleh I. Shpotyuk; Taras S. Kavetskyy; Andriy P. Kovalskiy; Vesela Pamukchieva
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Paper Abstract

The influence of gamma-irradiation on the optical properties of GexSb40-xS60 chalcogenide glassy system is studied. It is established that long-wave shift of the optical absorption edge or 'gamma-darkening' effect in the investigated glasses depends on their chemical composition or average coordination number Z. The maximum gamma-irradiation effect is observed near the point of Z approximately equals 2.67 and it is absent in Sb-rich ternary bulk samples. The gamma-induced changes of the optical absorption are unstable and restores to some residual value after the period of approximately 2 months. The observed features of the gamma-induced effect are discussed in terms of the compositional dependencies of compactness and fraction of chemical bonds, determined according to the ordered bond network model.

Paper Details

Date Published: 10 April 2001
PDF: 6 pages
Proc. SPIE 4415, Optical Organic and Inorganic Materials, (10 April 2001); doi: 10.1117/12.425506
Show Author Affiliations
Oleh I. Shpotyuk, Scientific Research Co. Carat and Czestochowa Pedagogical Univ. (Ukraine)
Taras S. Kavetskyy, Scientific Research Co. Carat and Lviv I. Franko National Univ. (Ukraine)
Andriy P. Kovalskiy, Scientific Research Co. Carat (Ukraine)
Vesela Pamukchieva, Institute of Solid State Physics (Bulgaria)

Published in SPIE Proceedings Vol. 4415:
Optical Organic and Inorganic Materials
Steponas P. Asmontas; Jonas Gradauskas, Editor(s)

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