Open AccessGamma radiation induced darkening in barium gallo-germanate glass
Author(s) -
Xiao Chen,
Xiaobo Heng,
Guowu Tang,
Tingting Zhu,
Min Sun,
Xiujie Shan,
Xin Wen,
Jingyuan Guo,
Qi Qian,
Zhongmin Yang
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.009149
Subject(s) - germanate , materials science , electron paramagnetic resonance , thermoluminescence , irradiation , optics , infrared , barium , infrared spectroscopy , analytical chemistry (journal) , nuclear magnetic resonance , optoelectronics , chemistry , luminescence , physics , nuclear physics , organic chemistry , doping , chromatography , metallurgy
Barium gallo-germanate (BGG) glass is an important glass matrix material used for mid-infrared transmission and mid-infrared fiber laser. In this study, we investigated the γ-ray irradiation induced darkening effect of BGG glass. Optical transmittance spectra, electron paramagnetic resonance (EPR) and thermoluminescence (TL) spectra were employed to investigate the γ-ray irradiation induced defects. Two kinds of Ge-related defects in the irradiated BGG glass, named Ge-related non-bridging oxygen hole center (Ge-NBOHC) and Ge-related electron centers (GEC), were verified. In addition, the absorption bands of the two defects have been separated and the peak absorptivity of Ge-NBOHC and GEC defects is at 375 nm and 315 nm, respectively.