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Gamma radiation effects on absorption and emission properties of erbium-doped silicate glasses

Sheng Yu-Bang Yang Lü-Yun Luan Huai-Xun Liu Zi-Jun Li Jin-Yan Dai Neng-Li

Gamma radiation effects on absorption and emission properties of erbium-doped silicate glasses

Sheng Yu-Bang, Yang Lü-Yun, Luan Huai-Xun, Liu Zi-Jun, Li Jin-Yan, Dai Neng-Li
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  • Received Date:  02 June 2011
  • Accepted Date:  05 June 2012
  • Published Online:  05 June 2012

Gamma radiation effects on absorption and emission properties of erbium-doped silicate glasses

  • 1. College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics, Wuhan 430074, China
Fund Project:  Project supported by the National High Technology Research and Development Program of China (Grant No. 2011AA030201).

Abstract: A series of Er-doped silicate glasses is prepared by a conventional melting method under normal processing conditions, and the effects of gamma-ray radiation on absorption and emission properties of all samples are investigated. The radiation-induced darkening causes a strong broad optical absorption band that has a maximum around 400 nm and extends to the near infrared region. The point defects generated in the silicate matrix by irradiation around the Er3+ ion favor the activation of non-radiative relaxation channels thus modifying the photoluminescence quantum efficiency from specific excited levels, such as those emitting at 520 and 650 nm. Photobleaching effects are observed in Er-doped silicate glasses pumped by 980 nm LD at room temperature.

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