Gamma irradiation effect on the optical properties of GexSb40-xS60 chalcogenide glasses

Oleh I. Shpotyuk; Taras S. Kavetskyy; Andriy P. Kovalskiy; Vesela Pamukchieva

doi:10.1117/12.425506

10 April 2001 Gamma irradiation effect on the optical properties of GexSb40-xS60 chalcogenide glasses

Oleh I. Shpotyuk, Taras S. Kavetskyy, Andriy P. Kovalskiy, Vesela Pamukchieva

Proceedings Volume 4415, Optical Organic and Inorganic Materials; (2001) https://doi.org/10.1117/12.425506
Event: Advanced Optical Materials and Devices, 2000, Vilnius, United States

Abstract

The influence of gamma-irradiation on the optical properties of Ge_xSb_40-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.

Citation Download Citation

Oleh I. Shpotyuk, Taras S. Kavetskyy, Andriy P. Kovalskiy, and Vesela Pamukchieva "Gamma irradiation effect on the optical properties of GexSb40-xS60 chalcogenide glasses", Proc. SPIE 4415, Optical Organic and Inorganic Materials, (10 April 2001); https://doi.org/10.1117/12.425506

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