Er^(3+)-doped fluorogallate glass for mid-infrared applications  

作　　者：薛天锋 张丽艳 温磊 廖梅松 胡丽丽 

机构地区：[1]Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

出　　处：《Chinese Optics Letters》2015年第8期86-90,共5页中国光学快报（英文版）

基　　金：supported by the Hundred Talents Program of the Chinese Academy of Sciences;the National Natural Science Foundation of China(Nos.61475171 and 61177083);the Pujiang Talent Plan(No.14PJ1409200);the Joint Research Project of Chinese Academy of Science and Japan Society for the Promotion of Science(No.GJHZ1412)

摘　　要：We report an Er3＋-doped fluorogallate glass with good thermal and chemical stability. The low maximum phonon energy and high mid-infrared （IR） transmittance of the glass are confirmed by Raman and IR spectra, respectively. Based on Judd-Ofelt theory, intensity parameters and radiative properties are determined from the absorption and emission spectra. The proposed glass possesses a large fluorescence branching ratio β （21.71%） and a maximum stimulated emission cross-section σem of Er3＋：4 I11/2 → 4 I13/2 transition at 2.71 μm （1.04 × 10^-20 cm2）. The results indicate that it can be potentially applied in high-power 2.7 μm fiber lasers.We report an Er3＋-doped fluorogallate glass with good thermal and chemical stability. The low maximum phonon energy and high mid-infrared （IR） transmittance of the glass are confirmed by Raman and IR spectra, respectively. Based on Judd-Ofelt theory, intensity parameters and radiative properties are determined from the absorption and emission spectra. The proposed glass possesses a large fluorescence branching ratio β （21.71%） and a maximum stimulated emission cross-section σem of Er3＋：4 I11/2 → 4 I13/2 transition at 2.71 μm （1.04 × 10^-20 cm2）. The results indicate that it can be potentially applied in high-power 2.7 μm fiber lasers.

关 键 词：Chemical stability Emission spectroscopy Fiber lasers GLASS Glass transition Infrared devices Judd Ofelt theory 

分 类 号：TQ171.716[化学工程—玻璃工业] TN219[化学工程—硅酸盐工业]