Semiconductor Physics, Quantum Electronics & Optoelectronics. 2016. V. 19, N 4. P. 395-398.

Long-term radiation-induced optical darkening effects in chalcogenide glasses
T.S. Kavetskyy

Drohobych Ivan Franko State Pedagogical University, 24, I. Franko str., 82100 Drohobych, Ukraine The John Paul II Catholic University of Lublin, 14 Al. Racławickie, 20-950 Lublin, Poland

Abstract. In this work, it is reported that the -irradiated (2.41 MGy accumulated dose) glasses As2S3 (2 mm thick) and Ge15.8As21S63.2 (1 mm thick), both measured 10 years after -irradiation, exhibit radiation-induced optical darkening effect (i.e., long-wave shift of fundamental optical absorption edge). In the case of As2S3 glass, the observed long-term radiation-induced optical darkening effect is well comparable with that reported in literature for -irradiated (3 MGy accumulated dose) glass As2S3 (1.5 mm thick), measured directly after -irradiation. In view of practical application, this finding demonstrates the possibilities for development of innovative chalcogenide glass based long-term dosimeter systems with stable and control parameters. A possible general criterion for mechanisms of long-term radiation-induced structural changes in chalcogenide glasses has been also considered.

Keywords: chalcogenide glasses, optical properties, radiation modification.

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