Synthesis and Spectroscopy of High Concentration Dysprosium Doped Ges2-Ga2s3-Cdi2 Chalcohalide Glasses and Fiber Fabrication

0.2%-3% weight of Dy3+ ions doped 64GeS(2)center dot 16Ga(2)S(3)center dot 20CdI(2) glasses were synthesized, and their spectroscopic properties were investigated. It was shown that the host glass could dissolve as much as 3% Dy3+ ions without deteriorating the glass transparency. The mid-infrared (MIR) emissions of the glasses did not present remarkable concentration quenching when the Dy3+ ions concentration was less than 0.6%. It was also shown that the MIR emission properties could be significantly improved by reducing S-H/O-H impurities in the glasses. The spectral analyses indicated that the 2.9 and 4.3 mu m emissions of Dy3+ ions in the glass showed relatively large stimulated emission cross sections. The glass doped with as high as 0.4% Dy3+ ions was successfully drawn into fibers, indicating good potential of the doped glass for MIR lasers. (C) 2016 Elsevier B.V. All rights reserved.